Your FREE FSOT Flashcards 2026 – 100+ Cards

Legislative (Congress — makes laws), Executive (President — enforces laws), and Judicial (the courts — interprets laws). The Constitution separates these powers and balances them through checks and balances.

The system by which each branch of government can limit the powers of the others — e.g., the President vetoes bills, Congress overrides vetoes and confirms appointments, and the courts can rule actions unconstitutional.

The division of government into legislative, executive, and judicial branches so that no single branch holds all power. It is a foundational principle of the U.S. Constitution.

The division of power between a national (federal) government and state governments, each with its own areas of authority. Some powers are shared (concurrent) and some are reserved to the states.

The first ten amendments to the U.S. Constitution (ratified 1791), guaranteeing rights such as free speech, religion, and press (1st), the right to bear arms (2nd), and due process (5th).

Protects five freedoms: religion, speech, press, assembly, and petition. It bars Congress from establishing a religion or abridging free expression.

A bill is introduced in the House or Senate, passes committee, is approved by both chambers in identical form, then is signed by the President — or becomes law over a veto by a two-thirds vote in each chamber.

The Supreme Court case that established judicial review — the power of the courts to declare a law or executive action unconstitutional. It made the judiciary a co-equal branch.

Drafted primarily by Thomas Jefferson, it declared the thirteen colonies independent of Britain and asserted that all people have unalienable rights to life, liberty, and the pursuit of happiness.

Ratified in 1788, it is the supreme law of the United States. It creates the three branches, divides power between federal and state governments, and can be amended (27 amendments to date).

A U.S. foreign-policy statement opposing further European colonization or intervention in the Western Hemisphere, while pledging U.S. non-interference in existing European colonies and European affairs.

U.S. policy to provide political, military, and economic aid to nations threatened by communism. It launched the Cold War strategy of containment.

The U.S. program (1948) that gave billions in aid to rebuild Western European economies after World War II, partly to resist the spread of communism.

The Cold War U.S. strategy of preventing the spread of communism beyond its existing borders, articulated by diplomat George Kennan and enacted through the Truman Doctrine, NATO, and other policies.

President Abraham Lincoln's order declaring enslaved people in Confederate-held territory to be free. It reframed the Civil War as a fight against slavery.

Landmark U.S. law that outlawed discrimination based on race, color, religion, sex, or national origin and ended segregation in public places.

An amendment to the U.S. Constitution is proposed by a two-thirds vote of both houses of Congress (or a national convention) and ratified by three-fourths of the states.

The body that formally elects the U.S. President. Each state's electors equal its members of Congress; a candidate needs 270 of 538 electoral votes to win.

Enumerated in Article I: to tax, borrow, regulate interstate and foreign commerce, declare war, raise armies, coin money, and make laws 'necessary and proper' to carry out its duties.

The Secretary of State is the President's chief foreign-affairs adviser and head of the Department of State, leading U.S. diplomacy, negotiating treaties, and directing the Foreign Service.

Consular, Economic, Management, Political, and Public Diplomacy. Candidates choose one track when they register for the FSOT.

Diplomats represent and advance their country's interests abroad and report on conditions; consular officers protect citizens overseas and adjudicate visas and passports.

A concept developed by Joseph Nye: a country's ability to influence others through attraction — its culture, values, and policies — rather than through coercion or payment.

Under the Vienna Convention on Diplomatic Relations (1961), accredited diplomats are protected from arrest and prosecution in the host country so they can perform their duties without coercion.

A lawmaking body with two chambers. The U.S. Congress is bicameral: the House of Representatives (by population) and the Senate (two per state).

The President can veto (reject) a bill passed by Congress; Congress can override the veto and make the bill law with a two-thirds vote in each chamber.

The power of courts to determine whether a law or government action conforms to the Constitution and to strike down those that do not. It was established in Marbury v. Madison (1803).

After the FSOT, a panel reviews each candidate using a total-candidate approach — weighing the FSOT score together with education, work background, and personal-narrative responses to decide who advances.

Ended the Thirty Years' War and is widely seen as the origin of the modern system of sovereign nation-states, establishing the principle of state sovereignty.

An agreement between Spain and Portugal, mediated by the Pope, dividing newly discovered lands outside Europe between them along a meridian west of the Cape Verde Islands.

Ended World War I, imposed reparations and territorial losses on Germany, and created the League of Nations. Its harsh terms are often linked to the rise of World War II.

Founded in 1945 to maintain international peace and security. Its principal organs include the General Assembly and the Security Council (five permanent members with veto power: U.S., U.K., France, Russia, China).

The North Atlantic Treaty Organization (1949), a collective-defense alliance in which an armed attack against one member is considered an attack against all (Article 5).

The period of geopolitical rivalry (roughly 1947–1991) between the U.S.-led Western bloc and the Soviet-led Eastern bloc, marked by an arms race, proxy wars, and ideological competition rather than direct war.

A group of states, founded during the Cold War, that chose not to formally align with either the U.S. or the Soviet bloc, seeking to preserve their independence and sovereignty.

The process, peaking after World War II, by which colonies in Africa, Asia, and elsewhere gained independence from European powers, reshaping the modern map and the membership of the United Nations.

Latitude lines run east–west and measure distance north or south of the Equator; longitude lines run north–south and measure distance east or west of the Prime Meridian.

The Equator is 0° latitude, dividing Earth into Northern and Southern Hemispheres; the Prime Meridian is 0° longitude (through Greenwich), dividing it into Eastern and Western Hemispheres.

Africa, Antarctica, Asia, Australia, Europe, North America, and South America. Asia is the largest by area and population.

The post–World War II international monetary framework (1944) that created the International Monetary Fund (IMF) and the World Bank and pegged currencies to the U.S. dollar.

A conflict over Egypt's nationalization of the Suez Canal, in which Britain, France, and Israel intervened militarily but withdrew under U.S. and Soviet pressure — a marker of the decline of European colonial power.

A political and economic union of European states that allows free movement of goods, services, capital, and people; many members share the euro currency.

The transition (beginning in late-18th-century Britain) to machine-based manufacturing, which transformed economies, urbanized populations, and reshaped global trade and power.

A Latin principle of international law meaning 'agreements must be kept' — states are obligated to carry out their treaty commitments in good faith.

The principle that each state has supreme authority within its own territory and is free from outside interference — a cornerstone of the modern international system since Westphalia.

A global conflict triggered by alliances and the assassination of Archduke Franz Ferdinand. The U.S. entered in 1917; the war ended with the Treaty of Versailles in 1919.

A global conflict between the Allied and Axis powers. The U.S. entered after Pearl Harbor (1941); it ended in 1945 and reshaped the global order, leading to the Cold War and the United Nations.

Built in 1961 to divide Soviet-controlled East Berlin from West Berlin, it became the symbol of the Cold War's 'Iron Curtain' and fell in 1989 as communism collapsed in Eastern Europe.

The model in which the price of a good is set where the quantity buyers want (demand) equals the quantity sellers offer (supply). Price rises when demand exceeds supply and falls when supply exceeds demand.

The total market value of all final goods and services produced within a country in a given period — the broadest measure of an economy's size and output.

A sustained rise in the general price level, which reduces the purchasing power of money. It is commonly measured by the Consumer Price Index (CPI).

Fiscal policy is the government's use of taxing and spending to influence the economy; monetary policy is the central bank's control of the money supply and interest rates.

The central bank of the United States. It conducts monetary policy by setting interest-rate targets, regulating banks, and managing the money supply to promote stable prices and employment.

The principle that a country should specialize in producing what it can make at the lowest opportunity cost and trade for the rest — the economic basis for the gains from international trade.

The value of the next-best alternative given up when a choice is made. Every economic decision has an opportunity cost because resources are scarce.

A tax on imported goods. Tariffs raise the price of imports to protect domestic industries or raise revenue, but they can reduce overall trade and raise consumer prices.

A trade principle requiring a country to extend any trade advantage (such as a low tariff) granted to one trading partner to all other partners, ensuring non-discriminatory trade.

Free trade removes barriers (tariffs, quotas) between countries; protectionism uses barriers to shield domestic industries. Economists generally hold that free trade raises total output.

A significant, broad-based decline in economic activity lasting more than a few months, often defined informally as two consecutive quarters of falling GDP.

The difference between the value of a country's exports and its imports. A surplus means exports exceed imports; a deficit means imports exceed exports.

GDP counts output produced within a country's borders; GNP counts output produced by a country's residents wherever they are. They differ by net income earned abroad.

The price of one currency in terms of another. A stronger (appreciating) currency makes a country's imports cheaper and its exports more expensive abroad.

The international body that sets the rules of global trade and provides a forum for negotiating agreements and resolving trade disputes among member states.

The increasing interconnection of economies, cultures, and populations through trade, technology, and the movement of people and ideas across borders.

A government limit on the quantity of a good that may be imported. Like a tariff, it protects domestic producers but raises prices and reduces the supply available to consumers.

A deficit is the shortfall when a government spends more than it collects in a single year; the national debt is the cumulative total of past deficits the government still owes.

The percentage of the labor force that is jobless and actively seeking work. It excludes people who are not looking for work, so it does not capture all who lack jobs.

Percentage change $= \frac{\text{new value} - \text{old value}}{\text{old value}} \times 100$. A move from 50 to 60 is $\frac{10}{50}\times 100 = 20\%$.

The mean is the average (sum ÷ count); the median is the middle value when data are ordered; the mode is the most frequent value. They are the three common measures of central tendency.

Divide the numerator by the denominator and multiply by 100. For example, $\frac{3}{4} = 0.75 = 75\%$.

A comparison of two quantities by division, written a : b or $\frac{a}{b}$. A ratio of 3 : 1 means the first quantity is three times the second.

The range is the difference between the largest and smallest values; standard deviation measures how spread out values are around the mean. Both describe variability.

Probability $= \frac{\text{favorable outcomes}}{\text{total possible outcomes}}$, a number from 0 (impossible) to 1 (certain). The probability of rolling a 4 on a fair die is $\frac{1}{6}$.

Identify the variables on each axis or column, note the units and scale, then read values at the point of interest. Watch for misleading scales or truncated axes.

A rise from 4% to 6% is a 2-percentage-point increase but a 50% relative increase $\left(\frac{2}{4}\times100\right)$. The two are not interchangeable.

A statistical measure of how two variables move together, from −1 (perfect inverse) to +1 (perfect direct). Correlation does not by itself establish causation.

Evaluate in this order: Parentheses, Exponents, Multiplication and Division (left to right), then Addition and Subtraction (left to right).

When data are skewed by outliers (such as a few very high incomes), the median often represents the 'typical' value better than the mean, which the extreme values pull upward.

A verb must agree in number with its subject. With indefinite pronouns like 'each,' 'every,' and 'either,' use a singular verb: 'Each of the employees has a desk' (not 'have').

'Principal' means main/most important (or a school head or a sum of money); 'principle' is a rule or fundamental truth. 'The principal reason' uses the adjective.

'Its' is the possessive ('the dog wagged its tail'); 'it's' is the contraction of 'it is' or 'it has' ('it's raining'). The apostrophe never marks possession here.

'Affect' is usually a verb meaning to influence ('the policy will affect trade'); 'effect' is usually a noun meaning a result ('the effect was clear').

Items in a list or series should share the same grammatical form: 'comprehensive, informative, and well-organized' (all adjectives), not 'comprehensive, informative, and it was organized well.'

A semicolon joins two closely related independent clauses without a conjunction: 'The meeting was scheduled for 9 a.m.; however, it was postponed.' A comma alone would be a comma splice.

A comma before the final 'and' in a list of three or more items: 'her parents, Oprah Winfrey, and God.' It prevents ambiguity about whether the last items are separate.

A modifier must clearly attach to the word it describes. 'Running for the gate, she hoped to catch her flight' is correct; 'Running for the gate, the flight was boarding' wrongly makes the flight run.

'Who' is the subject (who is calling?); 'whom' is the object (to whom did you speak?). Test: if you could answer with 'he,' use 'who'; if 'him,' use 'whom.'

Joining two independent clauses with only a comma ('It was late, we left'). Fix it with a period, a semicolon, or a comma plus a coordinating conjunction ('It was late, so we left').

Describes an action that will be completed before a point in the future: 'By the time the conference begins, the team will have finished its preparations.'

In active voice the subject performs the action ('The committee approved the plan'); in passive voice the subject receives it ('The plan was approved'). Clear writing usually favors the active voice.

The main idea is the central point the whole passage supports — stated in a thesis or inferred from the topic plus the author's stance. It covers the passage as a whole, not a single detail.

Infer tone from word choice — especially evaluative adjectives and qualifiers. Tones may be neutral, critical, approving, or skeptical; distinguish the author's view from views they merely report.

When a passage uses a word you don't know, use surrounding clues — definitions, contrasts, examples — to infer its meaning, rather than relying on a single dictionary sense.

Cut words that repeat an idea already implied: 'final outcome,' 'climbed up,' and 'enough sufficient' are redundant. Concise, precise prose is the standard for English usage questions.

A premise is a statement offered as evidence or support; the conclusion is the main point the premises are meant to prove. Find the conclusion first by asking what the argument is trying to convince you of.

An unstated premise an argument needs in order to work — the gap between the stated evidence and the conclusion. Identifying assumptions is one of the abilities the FSOT Logical Reasoning section measures.

A conclusion that must be true given the stated information. A valid inference is fully supported by the passage and adds no outside knowledge — choose the answer the text logically locks in.

A sufficient condition guarantees a result (in 'If A then B,' A is enough to know B); a necessary condition is required for it (B must hold for A). Confusing the two is a classic reasoning error.

From 'If A then B,' the valid 'If not B then not A' — negate both terms and flip them. It is always true when the original conditional is true.

A valid argument form: 'If A then B; A is true; therefore B.' Affirming the sufficient condition lets you conclude the necessary one.

A valid argument form: 'If A then B; B is false; therefore A is false.' Denying the necessary condition lets you deny the sufficient one — the contrapositive in action.

The invalid move of concluding 'A' from 'If A then B' and 'B.' B can have other causes, so B being true does not prove A.

The invalid move of concluding 'not B' from 'If A then B' and 'not A.' B may still hold for another reason, so 'not A' does not prove 'not B.'

Two things varying together (correlation) does not prove one causes the other (causation). The link may be coincidence, reverse causation, or a third factor. Treating correlation as cause is a common flaw.

Add a fact that makes the conclusion more likely — typically by supporting the link between evidence and conclusion or ruling out an alternative explanation.

Add a fact that makes the conclusion less likely — for causal arguments, the strongest weakener is usually an alternative cause or a case where the effect occurs without the supposed cause.

The flaw of treating the absence of evidence against a claim as evidence for it: 'No one has proven it ineffective, so it must work.' Lack of disproof is not proof.

Assuming the conclusion as a premise — the argument 'proves' a claim by relying on that very claim. The reasoning goes in a circle and establishes nothing.

Distorting an opponent's position into a weaker version, then attacking that weaker version instead of the real argument.

Presenting only two options as if they were the only possibilities when other alternatives exist: 'Either we cut costs or we fail.'

Drawing a broad conclusion from a sample that is too small or biased to represent the whole group — a flaw in inductive reasoning.

'Some' means at least one and reverses (some A are B → some B are A); 'most' means more than half and does not reverse. Two 'most' statements about one group guarantee a 'some' overlap.

On FSOT Logical Reasoning items, the correct answer must follow from the stated information, not from facts you happen to know. Each item is self-contained — reason within the four corners of the passage.

To justify a conclusion is to supply the premise or principle that, added to the argument, makes the conclusion follow. It bridges the evidence to the claim the argument seeks to prove.

Recognizing that two arguments share the same logical structure regardless of topic. Match the form — the conclusion type, the validity, and the pattern — and ignore the subject matter.

Separate the premises (support) from the conclusion (main point), identify any conditional statements, and note the gap the argument assumes — then answer exactly what the question asks.

Name the error in how the argument reasons from evidence to conclusion — e.g., mistaking correlation for cause, treating a necessary condition as sufficient, or generalizing from a biased sample.

The revamped FSOT has no fixed passing score. The Department invites candidates to the next step based on the highest scores and the needs of the Foreign Service — a competitive ranking, not a pass/fail cutoff.