Which country conquered many of the city-states along the east coast of africa? spain great britain portugal india

Portugal

Explanation: Portuguese colonization in Africa is related to its first incursions in the fifteenth century during the great navigation, known as the old colonial system and later with imperialism from the nineteenth century until the middle of the twentieth century.

The first place the Portuguese arrive on the African continent was in Ceuta, in the north, in 1415. In principle they established trade with the peoples of the region. Portuguese interests at that time were mainly to find a new route to the Indies and profitable products for the European market.