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Britain entered WWI on August 4, 1914 after Germany invaded Belgium going against the First Treaty of London.
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The attack was intended as a preventive action in order to keep the U.S. Pacific Fleet from interfering with military actions the Empire of Japan was planning in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States.
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During the final stages of World War II in 1945, the Allies of World War II conducted two atomic bombings against the cities of Hiroshima and Nagasaki in Japan. These two events are the only use of nuclear weapons in war to date.
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Hijacked planes crash into the World Trade Center in New York, the Pentagon in Washington, D.C., and a field in rural Pennsylvania Thousands of lives are lost.
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The earthquake was caused by subduction and triggered a series of devastating tsunamis along the coasts of most landmasses bordering the Indian Ocean, killing over 230,000 people in fourteen countries, and inundating coastal communities with waves up to 30 meters (98 ft) high