Answer:
Slavery was prohibited in states north of the 36°36', and this line continued west until California, which was completely admitted to the Union as a free state. In turn, slavery was allowed beneath the line. Missouri, on the other hand, was allowed into the Union as a slave state. This allowed for the amount of slave and free states to stay balanced to preserve the status quo in Congress.
The correct answer is D.
Roosevelt Corollary is seen as an addition to the Monroe Doctrine in which the US stated it would not interfere with the politics of the European nations if they did not interfere in the Western Hemisphere. The Roosevelt Corollary was presented to the Congress after the Venezuelan crisis and it states that US will intervene and mediate the conflicts between European and the nations of Latin America and enforce any claims of the European nations if they are legitimate.
C - Swahili
D East African societies had more central control than West African societies