John D. Rockefeller's horizontal combination was so successful that he controlled this percentage of the nation's oil refining by 1882

In January 1943, President Roosevelt

A) traveled to North Africa to meet with Churchill. B) died in Warm Springs, Georgia. C) met with Stalin, Chiang Kai-shek, and Churchill in Teheran. D) began his fourth term in office.

The Mass Line approach was Mao Zedong's ________

A) version of Marxism B) economic policy C) plan for rapid industrialization D) cultural revolution

What reform movement won temporary political success through the Maine Law?

A. the movement to improve prison conditions B. the campaign for women's suffrage C. the anti-drinking crusade D. the movement for public high schools

What was the name of the British liner sunk by a German submarine in May 1915, which resulted in the deaths of more than a thousand passengers, including 124 Americans?

a. Lusitania b. the Ireland c. the Essex d. the Arabia