Infer how did the swahili language affect trade in the east african city-state

Swahili was a trade language on the coastline of Eastern Africa and in was a primar link to the Indian Ocean.

Thanks to the Swahili trade routes (prolonged from Tanzania to the Democratic Republic of Congo), goods were brought to the coasts and were sold to Arab and Indian sellers.

Finally, this language had an important role in the trade of ivory and enslaved people since Swahili dealers have acted as intermediaries between colonial governments and African ethnic groups for the last 200 decades.