How did john d. rockefeller horizontally integrate his monopoly in 1880?

a. he purchased iron mines around the country to add to his business.
b. he created a trust that controlled ninety percent of the nation's oil refineries.
c. he created a trust that controlled oil wells, refineries, and distribution networks.
d. he purchased coal plants around the country to add to his business.

Which best explains how wealthy residents of italian cities contributed to the renaissance? a) wealthy residents bought works of art, which supported artists. b) wealthy residents participated in religion, which supported the church c) wealthy residents participated in music, which supported the arts. d) wealthy residents bought classical books, which supported scholars.

Which factor was a major cause of the great depression of the 1930?

2points which option best completes the diagram? humanitarian aid as a tool of foreign policy the united states provides humanitarian aid to rebuild after an earthquake. the country supports u.s. interests. o a. more educated citizens are more likely to create a democratic government o b. the citizens and government have a positive attitude toward the united states. o c. more prosperous citizens have money to spend. o d. the country's government discovers a new natural resource.