Four most important achievements/ changes in America's first 100 years
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The fourth of July is remembered as the birth of the United States as an independent country. Becauase of that, we call it independence day.
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Members of the constitutional convention signed the United States Constitution on September 17, 1787, in Philadelphia, Pennsylvania.
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On December 15, 1991, the bill of rights was made part of the consitution. Ten amendments were radified.
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The war of 1812 was an armeed conflict between the U.S and the British empire. It officially ended in February when the U.S congress ratified a treaty.