Three factors fueled American Imperialism.
Economic competition among industrial nations. Political and military competition, including the creation of a strong naval force. A belief in the racial and cultural superiority of people of Anglo-Saxon descent.
Responding to xenophobic concerns, Congress passed an emergency law restricting immigration in 1921. Among other provisions, the Act established a quota (a proportional share of a total) for nationalities on the basis of their numbers in the U.S. in 1910.
The missing detail is: a quota.
Was united under peace. The USA wanted another deal that would make sure it would not happen again, but russia also wanted peace, but it wanted ALL of the world to be under its control rather than separate.
Because Nixon was scared of the Soviets.
The answer is D. Colonel George A. Custer, Sioux