Kilwa was a muslim city that thrived because

Kilwa was a Muslim city that thrived because Trade with foreign lands  

Explanation:

The world economic background depends on different factors together with the Indian maritime that provides a conducive environment for trade among diverse nations. The society, therefore, is better placed in the determination of the economic roles that promote cultural integration into the nations that come together to extend their economic activities worldwide.

It is not only trade that is practiced, but intermarriage also occurred because of business during the contemporary period. During major international trades, different activities were organized, that brought all people together.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail