| 1946-1990 |
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| 1946-54 |
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| ・インドシナ戦争 The Indochina War, which ended French control over the region. Vietnam was divided in two. |
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| 1948 |
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| ・大韓民国と朝鮮民主主義人民共和国の成立 The Republic of Korea (South Korea) and the Democratic People's Republic of Korea (North Korea) were established. |
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| ・イスラエル建国をきっかけにパレスチナ戦争(第一次中東戦争)勃発 (-49) The State of Israel was proclaimed, drawing an attack from the Arab League (the First Middle East War). |
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| ・インドのガンジー暗殺 Assassination of Mahatma Gandhi. |
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| ・国連人権宣言 The United Nations adopted the Universal Declaration of Human Rights. |
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| 1949 |
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| ・アイルランド, アイルランド共和国となり英連邦離脱 Ireland (Eire) proclaimed itself the Republic of Ireland and left the British Commonwealth. |
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| ・NATO 成立 The North Atlantic Treaty Organization (NATO) was founded. |
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| ・東西ドイツ成立 The Federal Republic of Germany (West Germany) and the German Democratic Republic (East Germany) were formed. |
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| ・コスタリカ, 常備軍を廃止する憲法を制定 Costa Rica adopted a constitution prohibiting a standing army. |
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| ・中華人民共和国の成立 The People's Republic of China was proclaimed with Mao Zedong as its chairman (主席). The Kuomintang government fled to Taiwan. |
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| 1950 |
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| ・中国, チベットを占領 China occupied Tibet. |
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| 1950-53 |
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| ・朝鮮戦争 The Korean War. The Armistice of Panmunjom (板門店) divided the Korean Peninsula at the 38th parallel (38 度線). |
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| 1955 |
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| ・ワルシャワ条約機構成立 The Warsaw Treaty Organization was founded (-91) under the Warsaw Pact. |
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| ・ラッセル･アインシュタイン宣言 The Russell-Einstein Manifesto called for a meeting of scientists to discuss nuclear disarmament. |
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| 1956 |
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| ・ハンガリー動乱 The Hungarian Uprising. |
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| ・スエズ動乱(第二次中東戦争) (-57) The Suez Crisis (the Second Middle East War). Israel attacked Egypt, whose President Nasser (ナセル) had announced the nationalization of the Suez Canal. |
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| 1957 |
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| ・パグウォッシュ会議 The first Pugwash Conference was held. |
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| 1959 |
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| ・キューバ革命 The Cuban Revolution. Fidel Castro (カストロ) took control of the government. |
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| 1960 |
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| ・アフリカの年 The Year of Africa. Seventeen African nations became independent. |
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| 1961 |
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| ・ベルリンの壁建設 The Berlin Wall was erected. |
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| 1962 |
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| ・キューバ危機 The Cuban Missile Crisis. |
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| 1963 |
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| ・ケネディー大統領暗殺 The assassination of President John F. Kennedy. |
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| ・部分的核実験禁止条約調印 The Partial Test Ban Treaty (PTBT) was signed by the United States, Britain, and the Soviet Union. Of the nuclear powers, France and China did not sign. |
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| 1965 |
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| ・アメリカ, 北ベトナム空爆を開始し, ベトナム戦争本格化 The United States began air raids on North Vietnam. The Vietnam War escalated. |
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| 1966-76 |
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| ・文化大革命 The Great Cultural Revolution in China. |
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| 1967 |
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| ・第三次中東戦争(六日戦争) The Third Middle East War (the Six Day War). Israel defeated the Arab countries in six days. |
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| ・EC 発足 The European Community (EC) was established. |
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| 1968 |
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| ・プラハの春 The Prague Spring liberalization movement was crushed by Warsaw Pact forces. |
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| ・核拡散防止条約調印 The Nuclear Non-Proliferation Treaty (NPT) was signed by nuclear and non-nuclear countries. |
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| 1971-72 |
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| ・印パ戦争 The India-Pakistan War |
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| 1973 |
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| ・第四次中東戦争 The Fourth Middle East War (the Yom Kippur War). Arab countries attacked Israel. |
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| ・石油危機 The First Oil Crisis. |
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| 1979 |
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| ・スリーマイル島原発事故 The Three Mile Island nuclear accident. |
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| ・イラン革命 The Iranian Revolution. Ayatollah Khomeini (ホメイニ) became ruler of the new Islamic republic. |
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| ・第 2 次石油危機 The Second Oil Crisis. |
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| ・ソ連のアフガニスタン侵攻(-88) The Soviet army invaded Afghanistan, remaining there until 1988. |
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| 1980 |
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| ・イラン･イラク戦争勃発 (-88) The Iran-Iraq War. |
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| 1981 |
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| ・フランスで社会党のミッテラン大統領に Fran ois Mitterrand became the first socialist president of France. |
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| ・ベラウで非核憲法採択 A nuclear-free constitution was adopted in Belau. |
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| 1985 |
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| ・ソ連でゴルバチョフが書記長に Michael Gorbachev became the general secretary of the Soviet Union. He would embark on drastic reforms under the slogans of perestroika (ペレストロイカ＝改革) and glasnost (グラスノスチ＝情報公開). |
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| 1986 |
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| ・フィリピンでマルコス大統領失脚し, アキノ大統領就任 “People Power” in the Philippines brought about the downfall of President Ferdinand Marcos. Corazon Aquino became president. |
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| ・チェルノブイリ原発事故 The Chernobyl nuclear accident. |
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| 1987 |
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| ・オゾン層破壊防止に向けてモントリオール議定書が採択される Adoption of the Montreal Protocol on Substances that Deplete the Ozone Layer. |
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| 1988 |
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| ・ビルマに軍事政権成立 A military regime was established in Burma. |
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| ・パレスチナ解放機構 (PLO), パレスチナ国家の独立を宣言 The Palestine Liberation Organization (PLO) proclaimed the State of Palestine. |
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| 1989 |
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| ・ビルマ, 国名をミャンマー連邦に. アウン･サン･スー･チーを自宅軟禁 (-95) Burma was renamed Myanmar by the military regime. The opposition leader Aung San Suu Kyi was placed under house arrest. |
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| ・天安門事件 The Tiananmen Square massacre. |
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| ・ベルリンの壁崩壊 The fall of the Berlin Wall. |
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| ・ルーマニア革命 The Romanian Revolution. A popular uprising led to the execution of the ruler, Nicolae Ceausescu (チャウシェスク), in one of the most dramatic developments in the collapse of the communist regimes of Eastern Europe. |
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| 1990 |
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| ・イラク軍のクウェート侵攻により湾岸戦争勃発 (-91) Iraq's invasion of Kuwait triggered the first Gulf War. Multinational forces (多国籍軍) attacked Iraq and forced the Iraqis out of Kuwait. |
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| ・ドイツ再統一 The reunification of Germany. |
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| ・南アフリカでマンデラ釈放. アパルトヘイト廃止へ In South Africa, Nelson Mandela was released after twenty-seven years in prison. The ban on opposition activities was lifted. The repeal of apartheid would be completed by 1994. |
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