How did Islam impact East Africa

Islam advanced slowly and gradually along a network of caravan routes through trading contacts with some African peoples, spread by ordinary adherents, Kiswahili-speaking merchants, who penetrated the interior of Eastern Africa in search of ivory and slaves.

Explanation:

don't blame I if I wrong

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;

roosevelt essentially took the opposite approach as hoover in taking on the great depression. herbert hoover thought that america and its economy could naturally recover from the depression in due course, so he adamantly restrained the federal government from intervening on behalf of the people affected. on the other hand, roosevelt dramatically increased employment by expanding the federal government and establishing agencies that would aid in relieving some of the country's worst problems.