Aomori Entrance Social Studies cheat sheet

Japan's latitudinal span: roughly 20°N (Okinotorishima) to 45°N (Bentenjima, Hokkaido); the standard 25°N–45°N reference line often appears in textbook maps.

Climate zones: Hokkaido and northern Honshu = cool continental, heavy winter snow on the Sea of Japan side; Pacific side = wet summers, dry winters; Nankai/Setouchi = mild, low rainfall; Nansei Islands = subtropical.

Seasonal wind rule: winter monsoon from northwest brings snow to the Sea of Japan side (orographic uplift) and clear dry weather to the Pacific side; summer monsoon brings rain and typhoons.

Japan's land area ≈ 378,000 km²; EEZ ≈ 4.47 million km², among the world's largest; forest covers about two-thirds of the land.

Industry location patterns: Pacific Belt (Keihin, Chukyo, Hanshin, Kitakyushu) for heavy industry and ports; inland areas for high-tech and precision manufacturing; Hokkaido for agriculture, dairy, and tourism.

Agriculture: rice self-sufficiency near 100% on a calorie basis for rice itself, but overall food self-sufficiency ratio (calorie basis) has fallen to about 38%; Hokkaido leads in wheat, potatoes, dairy, and sugar beet.

Map skill: contour lines closer together = steeper slope; V-shaped contours crossing a river point upstream; scale 1:25,000 means 1 cm = 250 m; latitude 1° ≈ 111 km.

Population: total about 124 million and declining; Tokyo metropolitan area holds roughly 30% of the population; aging rate (65+) is about 29%, the world's highest among major countries.

Period sequence: Jomon (c. 14,000 BCE–300 BCE) → Yayoi (rice agriculture, bronze/iron) → Kofun (keyhole tombs) → Asuka → Nara (710–794) → Heian (794–1185).

Kamakura shogunate (1185–1333): Minamoto no Yoritomo; Hojo regents; defeated by Mongol invasions (1274, 1281) aided by typhoons; fell to Emperor Go-Daigo's Kenmu Restoration.

Muromachi (Ashikaga, 1336–1573): Onin War (1467–77) begins Sengoku period; Oda Nobunaga and Toyotomi Hideyoshi unify; Tokugawa Ieyasu wins Sekigahara (1600) and founds Edo shogunate (1603).

Edo period (1603–1868): sakoku (closed country) policy; only Dutch and Chinese trade at Nagasaki (Dejima); class order shi-no-ko-sho; Genroku culture and later Kasei culture.

Meiji Restoration (1868): Charter Oath, abolition of domains (haihan chiken, 1871), conscription (1873), land tax reform (1873), Meiji Constitution (1889), Sino-Japanese War (1894–95), Russo-Japanese War (1904–05).

Taisho democracy: party cabinets, universal male suffrage (1925), but also the Peace Preservation Law (1925); Great Kanto Earthquake (1923); Showa Depression and rise of militarism.

Postwar: Potsdam Declaration (1945), surrender Aug 15, 1945; new Constitution effective May 3, 1947; San Francisco Peace Treaty (1951, effective 1952); Japan joins UN (1956); economic miracle and 1964 Tokyo Olympics.

Civilization timeline anchors: Mesopotamia (Tigris-Euphrates, cuneiform, Hammurabi's Code), Egypt (Nile, hieroglyphs), Indus, Yellow River (Shang, oracle bones), Greece (polis, Athens democracy), Rome (republic 509 BCE, empire 27 BCE).

Religions: Buddhism (Gautama, 5th c. BCE, India); Christianity (1st c. CE, Palestine); Islam (7th c. CE, Muhammad, Mecca/Medina; Five Pillars; Sunni-Shia split).

Medieval Europe: feudalism (lord-vassal, manor), Catholic Church authority, Crusades (1096–1291), Black Death (1347–51) killing roughly a third of Europe's population.

Renaissance (14th–16th c., Italy) → Reformation (Luther's 95 Theses, 1517) → Counter-Reformation (Council of Trent) → Age of Exploration (Columbus 1492, Vasco da Gama 1498, Magellan's circumnavigation 1519–22).

Revolutions: English Civil War and Glorious Revolution (1688, constitutional monarchy); American Revolution (1776); French Revolution (1789, Declaration of the Rights of Man); Industrial Revolution begins in Britain (18th c.).

World Wars: WWI (1914–18, Sarajevo trigger, Treaty of Versailles 1919); WWII (1939–45, Pearl Harbor 1941, atomic bombs Aug 1945); League of Nations fails; UN founded 1945.

Cold War (1947–1991): Truman Doctrine, Marshall Plan, NATO (1949) vs Warsaw Pact (1955), Cuban Missile Crisis (1962), Berlin Wall falls 1989, USSR dissolves 1991; decolonization of Asia and Africa after 1945.

Three principles of the Japanese Constitution: popular sovereignty, respect for fundamental human rights, and pacifism (Article 9 renouncing war and war potential).

Article 9: renunciation of war; no maintenance of land, sea, and air forces or other war potential; right of belligerency not recognized. The Self-Defense Forces are interpreted as constitutional by government interpretation.

Equality (Art. 14): equality under the law, no discrimination in political, economic, or social relations; nobility abolished. Equal education opportunity (Art. 26) and equal pay (Art. 27).

Liberty rights: freedom of thought and conscience (19), religion (20), assembly, association, speech, press (21), academic freedom (23), right to life and liberty (13, pursuit of happiness).

Social rights (new human rights): right to maintain minimum standards of wholesome and cultured living (25), right to receive education (26), right and duty to work (27), right to organize (28).

Due process guarantees (Arts. 31–40): no deprivation of life or liberty except by law; no forced confession; right to counsel; no double jeopardy; no punishment for acts legal at the time committed.

Judicial review: the Supreme Court is the court of last resort with power to determine constitutionality (Art. 81); the Constitution is the supreme law (Art. 98).

Amendment procedure (Art. 96): requires concurrence of two-thirds of all members of both Houses, then a national referendum; the Emperor promulgates.

Diet is the highest organ of state power and sole law-making organ (Art. 41); bicameral: House of Representatives (465 members) and House of Councillors (248).

House of Representatives: 4-year term but can be dissolved; 289 single-member districts plus 176 proportional seats. House of Councillors: 6-year term, half elected every 3 years; 148 district + 100 proportional.

Legislative supremacy of the House of Representatives: overrides a Councillors' rejection by two-thirds vote; budget, treaties, and PM designation take precedence after a joint committee (or after 30 days for budget/PM).

Cabinet: PM chosen by the Diet; majority of ministers must be Diet members; cabinet is collectively responsible to the Diet; no-confidence vote forces resignation or dissolution (Art. 69).

Election rules: universal suffrage for citizens 18+; secret ballot; proportional representation uses the D'Hondt method in Japan; public office election law caps campaign spending and restricts door-to-door canvassing.

Administrative bodies: Cabinet Office, ministries, and independent agencies (e.g., Board of Audit, National Personnel Authority); local autonomy guaranteed by Chapter 8 and the Local Autonomy Act.

Local government: 47 prefectures and municipalities; directly elected governors and mayors; local assemblies; residents have direct-request rights (initiative, recall) under the Local Autonomy Act.

Separation of powers: legislative (Diet), executive (Cabinet), judicial (courts); the Supreme Court and lower courts exercise judicial power independently (Art. 76).

GDP = C + I + G + (X − M); nominal vs real GDP (real removes price changes); Japan's nominal GDP is roughly ¥600 trillion, third largest after the US and China.

Business cycle: expansion, peak, recession, trough; fiscal policy (government spending/taxes) and monetary policy (central bank interest rates and money supply) are the main tools.

Japan's public finance: tax revenue roughly ¥60–70 trillion; government bonds make up a large share of revenue; gross government debt exceeds 250% of GDP, the highest among advanced economies.

Taxes: direct (income, corporate, inheritance) vs indirect (consumption tax, currently 10% standard rate); progressive income tax; local taxes include resident tax and fixed asset tax.

International trade: balance of trade = exports − imports; current account includes trade plus services, income, and transfers; Japan typically runs a large income surplus.

Exchange rates: yen appreciation makes exports dearer and imports cheaper; yen depreciation boosts exporters but raises import costs; floating-rate system since 1973.

Comparative advantage (Ricardo): countries gain from specializing in goods with lower opportunity cost; protectionism (tariffs, quotas) reduces overall gains.

Key institutions: WTO (1995, successor to GATT), IMF (balance-of-payments support), World Bank (development loans), OECD; regional agreements include RCEP and CPTPP.

UN structure: General Assembly (one state, one vote), Security Council (5 permanent members with veto: US, UK, France, Russia, China; 10 non-permanent), Secretariat, ICJ, ECOSOC.

Human rights instruments: Universal Declaration of Human Rights (1948), International Covenant on Civil and Political Rights, International Covenant on Economic, Social and Cultural Rights (both 1966), Convention on the Rights of the Child (1989).

Sustainable development: SDGs (2015, 17 goals, 169 targets); Rio Earth Summit (1992); Kyoto Protocol (1997); Paris Agreement (2015, goal to limit warming well below 2°C, aiming for 1.5°C).

Global issues: North-South gap, ODA (Japan's target 0.7% of GNI, actual much lower), refugees (UNHCR), food and water scarcity, desertification, deforestation, biodiversity loss.

Conflict and security: nuclear non-proliferation (NPT 1968), chemical weapons ban (CWC), landmine ban (Ottawa Treaty), peacekeeping operations (PKO), Japan's three non-nuclear principles.

Environment: greenhouse gases (CO2, methane), carbon neutrality by 2050 declared by Japan; renewable energy share rising but still below 25% of electricity.

Globalization and inequality: multinational corporations, global supply chains, digital divide, aging populations in advanced economies, youth unemployment; responses include social safety nets and international cooperation.

Read the axes first: identify units, scale, and whether the axis starts at zero; a truncated axis exaggerates differences.

Line graph: slope indicates rate of change; a steepening line means acceleration, a flattening line means slowing growth; a crossing point shows where two series become equal.

Bar chart: compare lengths, not areas; stacked bars show composition, grouped bars compare categories; watch for 3D effects that distort perception.

Pie chart: only valid for parts of a whole (sums to 100%); compare angles, and note that small slices are hard to distinguish.

Scatter plot: direction (positive/negative), strength (tight vs loose cluster), and outliers; correlation does not establish causation.

Map reading: latitude/longitude, scale bar, legend, contour intervals, and projections; Mercator distorts high-latitude areas, so Greenland appears oversized.

Source analysis: identify author, date, audience, and purpose; distinguish primary from secondary sources; check for bias, omission, and loaded language.

Data reliability: sample size, sampling method, definition of terms (e.g., unemployment rate), and whether the data are nominal or real; cross-check multiple sources before drawing conclusions.

Geography–history link: Japan's location on the Pacific Rim shaped trade, industrialization, and its role in WWII and postwar growth.

Civics–history link: the 1947 Constitution reflects Occupation reforms (GHQ), including land reform, women's suffrage, and the peace clause.

Economy–geography link: resource scarcity and import dependence explain Japan's export-oriented manufacturing and energy policy.

Data skill applied to civics: read budget and debt charts in nominal terms, then convert to % of GDP for cross-country comparison.

Data skill applied to history: chronological ordering and periodization; verify dates against the sequence of shogunates and world events.

Common trap: confusing nominal and real values, or comparing countries without adjusting for population (per capita) or purchasing power (PPP).

Common trap: mixing up the House of Representatives and House of Councillors terms, sizes, and powers.