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They made tools from stone
The United States had millions of dollars invested in businesses in Cuba and there were many U.S. citizens in residence there. The U.S. also traded goods with Cuba.
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The Cold War, which started after the Second World War and spanned 1947 to 1991 refers to a period of political unease between the United States, the Soviet Union and their respective alliances.
In that period, specifically 1962, the Light-Emitting Diode (which has variants of red, blue and green that can be combined to produce the most perceptible colours, usable as holiday lights) was as invented.
Cheers!
The war reached a crescendo in early August 1945<span>, when Hiroshima and Nagasaki </span>were<span> struck with atomic bombs. On </span>August<span> 15, </span>Japanese<span> Emperor Hirohito accepted the terms that the allies </span>had<span> outlined for </span>Japan's surrender<span> in the Potsdam Declaration, and </span>finally<span>, on </span>September 2<span>, </span>Japan surrendered <span>formally
basically america droped bombs and caused </span>devastation