In the early 1900s, the recall, referendum, and initiative provisions were all examples of people exercising "popular sovereignty", since they allowed people to fight against laws or elected officials with whom they disagreed.
Basically the Texans and the Mexicans were mad at each other for land and crops/money and so they had a Battle. <span />
January 27, 1973: President Nixon signs the Paris Peace Accords, ending direct U.S. involvement in the Vietnam War.
A Nuclear War
Explanation:
Both countries were terrified of each other and just wanted to get rid of each other so that they could become the most powerful