The Swahili Coast City-States were a series of independent, trade-oriented city-states located along the East African coast, flourishing from the 9th to the 16th century. They served as vital commercial hubs in the Indian Ocean Trade Routes, connecting African, Arab, Persian, and later European merchants. These city-states, including Kilwa, Mombasa, and Zanzibar, became known for their wealth, cultural diversity, and unique blend of African and Islamic influences.