A. would be the correct answer
The United States and the Soviet Union fought together as allies against the Axis powers.
Conflicts of national interest caused the World War II alliance between the United States and the Soviet Union to be replaced by a Cold War that lasted 45 years. Initially a dispute over the future of Europe, it grew to include confrontations around the world.
The reason why Native Americans (and any group of people, for that matter) who practiced agriculture were more likely than hunter gatherers to establish homes is because they had a surplus of food, which meant that other people who did not farm were free to establish trade and develop new skills that led to a community atmosphere.
The one that was a factor in the U.S entry in world war I was :
B. the sinking of the Lusitania
The U.S intervention in the boxer rebellion was a problem for three main reasons:
- Americans in China were taking advantage of China's culture and resources.
- The Chinese people lost independence since Americans wanted to show other nations that they were superior to China by introducing them to other traditions, religion and products that changed their own.
- During the rebellion, there was a great number of Americans in the country.
