C. To eliminate all political parties that challenged communism
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The event that marked the end of the Byzantine empire would be the Fall of Constantinople, which happened in 1453
In 1803, U.S. representatives in Paris agreed to pay $15 million<span> for about 828,000 square miles of land that stretched from the Mississippi River to the Rocky Mountains and from the Gulf of Mexico to Canada. This deal, known as the Louisiana Purchase, nearly doubled the size of the United States. It's quite amazing if you ask me, that's a lot of money.</span>
Answer:
civil rights leaders to protest racial discrimination and to show support for major civil rights legislation that was pending in Congress.
Explanation: