Which of the following items is the principal reason the United States became involved in Vietnam?

Which of the following items was how communist sympathizers in South Vietnam were resupplied and reinforced during the Vietnam War?

Which of the following items was formed in the late 1940s as a means to prevent the spread of communism, and was the first ever peacetime alliance the United States joined in its history?

What two hormone(s) would be elevated in the hypophysectomized group with TSH injections? 

Which of the following individuals fanned American’s fears toward communism in the 1950s and helped perpetuate the 2nd Red Scare?

Which of the following items overturned the doctrine of “separate but equal,” and led to the desegregation of public schools in the United States?

Which of the following items is NOT considered a leading cause of the Cold War?

Which of the following items nearly resulted in a full scale global nuclear conflict in 1962 and, as a result,  led to an easing of tensions between the Soviet Union and the United States?

Which of the following items is NOT a reason the Great War is significant?

Which of the following items was a form of late 19th, early 20th century newspaper reporting that sensationalized news stories in an attempt to sell newspapers and push a political agenda onto its readers?