Which three social movements had the greatest impact on developing our modern image of what it means to be an American?

Topic: The mid-20th century marked a period of great upheaval and disruption as the United States recovered from a devastating Second World War and faced the looming spectre of nuclear war with the Soviet Union. As a result, Americans began challenging what it means to be an American at unprecedented levels and attempted to reshape the American image to fit the true diversity of the populace. For your final paper, I want you to examine the struggles for identity and recognition in American history during the latter half of the 20th century by answering the following questions: Which three social movements had the greatest impact on developing our modern image of what it means to be an American? For this paper, you should address the various movements we discussed in class and examine their goals, achievements, and lasting impacts on modern American society.