What impact did Portuguese forts have on the Swahili city-states of east Africa in the 1500s? A. England invaded and took most of East Africa. B. Portugal conquered most of East Africa. C. Trade patterns were disrupted, leading to Swahili decline. D. The Swahili conquered most of East Africa.

B. portugal conquered most of the East Africa

This was because portuguese had superior weapon examples they had cannon gun which produced alot of noise which made people to panic Also they had well trained soldiers than the swahili city state which made to defect them. In addition they used the advantage of the swahili state been not united.

C. Trade patterns were disrupted, leading to Swahili decline