The contributions of the ancient civilizations of Ghana, Axum, Kush, and Mali demonstrate that a
industrial technology was needed for African civilizations to develop
b
many African civilizations developed in southern Africa
c
advanced societies developed in Africa before Europeans colonized this region
d
most of the African Continent was unified under a single political system

C

Explanation:

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a

explanation:

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.