Islam spread extensively along the east coast of Africa by foreign traders.
John C. Calhoun suggested his idea of nullification as a substitute for potential secession in the 1820s. The correct answer is option(c).
John Caldwell Calhoun was an American statesperson and governmental deep thinker from South Carolina he grasped many main positions containing being the seventh sin chief executive of the United States from 1825 to 1832. A resolute champion of the organization of labor, and a slave-landowner himself, Calhoun was the Senate's most famous states' rights advocate, and his welcome opinion of nullification avowed that individual states had a right to refuse allied procedures that they considered illegal.
The tax was so disliked in the South that it create dangers of withdrawal. John C. Calhoun, Andrew Jackson's sin leader and a native of South Carolina, projected the belief of nullification, that asserted the levy unconstitutional and then meaningless.
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He thought a united front would be more effective in the battle against the entrenched Catholic Church.
Islam ruled North Africa by A.D. 700.
Im not completely sure but I think its B: great forests in North Africa were destroyed. My reason for this decision is that they probably destroyed the great forests for agriculturable land.
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