Answer: To occupy Cuba.
Explanation:
When Roosevelt was president, back then in September 1906, the United States sent troops to occupy Cuba and this situation and event is also known as the ''Pacification of Cuba''. The president Roosevelt wanted to see what are economic issues in Cuba and he wanted to take care of them because of the United States citizens protection because they were living on that island.
He also wanted free elections and to prevent internal riots. The troops left in February after the elections in January.
B. Zhou They introduced the Mandate of Heaven to justify their overthrow the Shang dynasty.
C. 250 years (I believe )
Slaves were mostly traded for "manufactured goods", since these goods came from England to Africa as part of the "Triangle Trade" that existed between Africa, the West Indies, and Europe.