Why was northern Africa isolated from the rest of the continent? A. Conflicting religious beliefs separated Muslim kingdoms in the north from the rest of Afric

B. The Zaire River was a natural barrier from the rest of the continent.

C. The Ethiopian Highlands were a natural barrier between North and South.

D. The Sahara Desert was a natural barrier from the rest of the continent.

D

Explanation:

The Sahara becomes the almost impenetrable barrier which throughout recorded history has separated the Mediterranean coast and north Africa from the rest of the continent. At much the same time north Africa becomes the site of one of the world's first great civilizations, Egypt.

answer: secession

secession, as it applies to the outbreak of the american civil war, comprises the series of events that began on december 20, 1860, and extended through june 8 of the next year when eleven states in the lower and upper south severed their ties with the union. the first seven seceding states of the lower south set up a provisional government at montgomery, alabama. after hostilities began at fort sumter in charleston harbor on april 12, 1861, the border states of virginia, arkansas, tennessee, and north carolina joined the new government, which then moved its capital to richmond, virginia. the union was thus divided approximately on geographic lines. twenty-one northern and border states retained the style and title of the united states, while the eleven slave states adopted the nomenclature of the confederate states of america.

explanation: