I would like to help but history is not my strong point
Answer:
The right answer is: 1. Strong social opposition to the war. 2. President Richard Nixon´s desire to get reelected.
Explanation:
In the 1960s, a peace movement was born and developed into a formidable social and political force. Opposition to war in Vietnam was massive, and it effectively put pressure on US decision-makers and the course of the conflict. Besides, president Nixon wanted to fulfill his promise to sign a face-saving peace "with honor". Nixon wanted to win reelection in 1972, he calculated that getting a peace deal with the Communist Northern Vietnamese would help him achieve that goal.
False. The news about the 54th regiment was another reason why blacks could fight in the civil war. After the 54ths heroic charge on the fort, President Lincoln awarded blacks the right to vote.