One city in this cultural region was attacked by the Zimba cannibals, prompting Portugal to take control of the city in 1589, and is also home to the Twelve Nations who preserve the culture of the city's original inhabitants.
Husain ibn Sulaiman constructed a palace now called Husuni Kubwa in a city in this cultural region that was largely built with coral. The Abushiri Revolt took place in this cultural region and was suppressed by English and German forces. One city in this cultural region was attacked by the Zimba cannibals, prompting Portugal to take control of the city in 1589, and is also home to the Twelve Nations who preserve the culture of the city's original inhabitants. The city of Sofala in this cultural region was once believed to be the Biblical cities of either Ophir or Tarshish. (*) Zheng He's "qilin" ("chee-lean") came from the city of Malindi in this cultural region. Home to trading cities like Kilwa, Mombasa, and Zanzibar, for 10 points, name this cultural region of East Africa on the Indian Ocean named for the lingua franca of Kenya and Tanzania.
Husain ibn Sulaiman constructed a palace now called Husuni Kubwa in a city in this cultural region that was largely built with coral.
Swahili Coast (prompt on descriptive [e.g. "the coast of East Africa"] or more specific answers, such as any city mentioned in the question)