The answer to this is letter D.) It led groups within empires to fight for their political independence. This era sparked lots of revolutions and upheavals against empires; different countries conquered by big empires united and strove to fight for freedom.
Renaissance
The age of enlightenment began in the 1650's, so it would need to be a continuation of an era that ended around the 1650's. Since the Renaissance lasted from 1350 - 1650, that makes it the most likely answer.
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One of the main arguments used to support US military involvement in Vietnam was the fear that if Vietnam fell to communism, other nations in Southeast Asia could as well.
Answer: i need this answer also
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