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The United States declares neutrality.
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The German Foreign Secretary Arthur Zimmermann sends a telegram to his ambassador in Mexico, instructing him to propose to the Mexican government an alliance against the United States.
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The United States declares war on Germany.
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The United States declares war on Austria-Hungary.
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Nazi Germany and the Soviet Union sign a nonaggression agreement and a secret codicil dividing eastern Europe into spheres of influence.
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Honoring their guarantee of Poland’s borders, Great Britain and France declare war on Germany.
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Germany invades Denmark and Norway. Denmark surrenders on the day of the attack but Norway holds out until June 9.
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Italy enters the war. Italy invades southern France on June 21.
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The United States declares war on Japan, entering World War II. Japanese troops land in the Philippines, French Indochina, and British Singapore. By April 1942, the Philippines, Indochina, and Singapore are under Japanese occupation.
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Nazi Germany and its Axis partners declare war on the United States.
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The United States drops an atomic bomb on Hiroshima.
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The United States drops an atomic bomb on Nagasaki.
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North Korea invades South Korea. With permission from Russia, North Korea invades South Korea and continues on to the capital of Seoul. South Korea does not have a strong enough army to stop it.
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South Korean President Syngman Rhee executes 100,000 people. Worried that South Koreans will join the communists, President Syngman Rhee starts the Summer of Terror and orders over 100,000 people killed.
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The United States joins the Korean War. President Harry Truman sends U.S. troops to Korea. The U.S. and other countries in the United Nations join the war because they want to stop communism from spreading to South Korea.
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The United States is defeated at Osan. American troops fight North Korean troops in Osan. The Americans expected an easy victory, but are surprised to find out that they are no match for the North Korean army.
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The United States gets a victory at Inchon. General Douglas MacArthur leads an invasion into South Korea at the city of Inchon. From there, the United Nations troops go to Seoul and take it back from North Korea.
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United States troops reach the capital of North Korea. U.S. troops push their way into Pyongyang, the capital of North Korea. Soldiers believe that the war will be over soon and start to take bets on what day the war will officially end.
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President Kennedy sends 400 American Green Beret Special Advisors to South Vietnam to train South Vietnamese to fight against Viet Cong guerrillas.
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The presidential palace in Saigon is bombed by two renegade South Vietnamese pilots flying American-made World War II era fighter planes. President Diem and his brother Nhu escape unharmed.
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Operation Chopper: America's first combat missions against the Vietcong. Operation Ranchhand: Objective to clear vegetation making it difficult for the Vietcong to ambush. US Military then Employs Agent Orange to expose roads and trails used by Vietcong forces.
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A Viet Cong victory in the Battle of Ap Bac makes front page news in America as 350 Viet Cong fighters defeat a large force of American-equipped South Vietnamese troops attempting to seize a radio transmitter. Three American helicopter crew members are killed.
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President John F. Kennedy is assassinated in Dallas. Lyndon B. Johnson is sworn in as the 36th U.S. President. He is the fourth President coping with Vietnam and will oversee massive escalation of the war while utilizing many of the same policy advisors who served Kennedy.
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Three North Vietnamese patrol boats attack the American destroyer U.S.S. Maddox in the Gulf of Tonkin ten miles off the coast of North Vietnam. They fire three torpedoes and machine-guns, but only a single machine-gun round actually strikes the Maddox with no causalities. U.S. Navy fighters from the carrier Ticonderoga, led by Commander James Stockdale, attack the patrol boats, sinking one and damaging the other two.
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China tests its first Atomic Bomb. China, by this time, has also massed troops along its border with Vietnam, responding to U.S. escalation
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The first attack by Viet Cong against Americans in Vietnam occurs at Bien Hoa air base, 12 miles north of Saigon. A pre-dawn mortar assault kills five Americans, two South Vietnamese, and wounds nearly a hundred others.
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Viet Cong terrorists set off a car bomb explosion at the Brinks Hotel, an American officers' residence in downtown Saigon. The bomb is timed to detonate at 5:45 p.m., during 'happy hour' in the bar. Two Americans are killed and 58 wounded.
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The Battle of Hamburger Hill was fought by the United States and South Vietnam against North Vietnamese forces.
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World coffee prices plummet. This significantly affects Rwanda's economy because coffee was one of its major cash crops.
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Iraq accused Kuwait of stealing oil from the Rumaylah, Iraq's oil field near the Iraqi-Kuwaiti border and warns of military action.
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The United States launched Operation Desert Shield. First U.S. troops arrived in Saudi Arabia.
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Iraq launched SCUD missiles on Israel. The U.S. deploys Patriot missiles to Israel and Saudi Arabia.
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Iraqi forces invaded the town of Khafji in Saudi Arabia. Iraqi forces were soon engaged by Saudi Arabian and Qatari troops with help from U.S. Marines.
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11 U.S. Marines in LAV's were killed in friendly fire incident by Air Force A-10 aircraft near town of Al Khafji while they were attacking a company of Iraqi tanks.
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An estimated 350,000 Somalis die of disease, starvation, or civil war. Images of famine and war are shown on American news networks. George H.W. Bush then ordered emergency airlifts of food and supplies to Somalia.
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Somali rebels shoot down two U.S. helicopters, resulting in the death of 18 U.S. Army Rangers and one Malaysian man. A heated battle ensues and hundreds of Somali civilians are killed..
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The U.S. formally ends the mission to Somalia, which has cost $1.7 billion dollars and left 43 U.S. soldiers dead and another 153 wounded.
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Rwandan President Juvénal Habyarimana is killed when his plane is shot out of the sky.
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Massacre at Gikondo - hundreds of Tutsis are killed in the Pallottine Missionary Catholic Church.
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Massacre at the Nyarubuye Roman Catholic Church - thousands of Tutsi are killed, first by grenades and guns and then by machetes and clubs.
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Safe haven of Srebrenica is overrun by Bosnian Serb forces under General Ratko Mladic. Thousands of Bosnian Muslim men and boys are separated from their families and massacred, despite the presence of Dutch UN troops. Nato air strikes against Serb positions help Muslim and Croat forces make big territorial gains, expelling thousands of Serb civilians on the way.
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The United Nations declares that it will be pulling its international staff and aid workers from Somalia because of the dangerous fighting conditions and attempts at kidnapping.
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A mass grave is discovered near Zvornik in eastern Bosnia, close to the Serbian border. More than 600 bodies thought to be those of victims of the 1995 Srebrenica massacre are eventually excavated from the grave.
