The British abandoned Boston in early 1776 because they were forced out of the country by the American soldiers.
American Revolutionary War was at large, and the Patriots, led by general Washington (who later became the first president of USA) won the battle at Boston, which was bloodless, by the way. This brought an end to an eight-year British occupation of the city.
They feared that Europe wanted to infringe and change the guidelines. <span />
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According to Krushchev's view was that U.S. invasion of Cuba was pending and that to lose Cuba would do great harm to the communist cause, especially in Latin America. Nikita Khrushchev was the leader of Soviet Union between 1894-1971, that time a cold War was going on among Soviet Union and United States of America
B Samuel Morse because he made the "Morse Code" and he wanted to make it wireless too I assume