Select all the correct answers. which two factors contributed to the spread of islam in africa?
a islam was already practiced by people in africa.
b many africans no longer believed in their own religions
c the islamic empire extended into north africa.
d the gold-salt trade brought islamic arabs into western and southern africab

pick 2

C) The Islamic empire extended into North Africa

D) The gold-salt trade brought Islamic Arabs into western and southern Africa

Explanation:

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john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.

i think u are supposed to write a long-essay answers to the long-essay questions