Flourishing of the Swahili City-States

Timeline

1. 1200Kilwa Kisiwani · TanzaniaCity-states such as Kilwa and Mombasa established regular routes with ports across the Indian Ocean via the monsoon currents, controlling trade through gold coinage and tariffs, and became the political and economic core of the Swahili coast.
2. 1200Lamu · KenyaThe city-states built coral-stone mosques, residences, and warehouses; Swahili became the common language of trade, and Islamic faith merged with Bantu traditions, forming a distinctive coastal urban culture.