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it geophraphical location is perfect of the coast of Africa
They grew powerful through trade
Kilwa, a city state on the coast of East Africa, was a one of the most important and successful trade cities in East Africa. One reason that Kilwa was successful, is it's location. It was as far south as a dhow, the sailboat used by the Arabs for sea journeys, could go in one monsoon. A monsoon is a seasonal wind, either Northeast, which would get you from Arabia to Kilwa, or the Southwest monsoon, that would get you to Arabia. Because Kilwa was the farthest south a boat would go, any city state farther south had to send their goods up to Kilwa to be traded and merchants in Kilwa could make a profit by charging a tax. Another reason for Kilwa's success was the goods they traded. Arabia had coffee, India had pepper, China had tea, silk and porcelain, and Indonesia had spices. Africa had somthing different to offer, ivory which was considered to be the plastic of that time because it was easy to carve, and gold, a precious metal.
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Kilwa Empire was created in 224.
Kilwa Empire ended in 980.
They grew powerful through trade.
There were many mines around Great Zimbabwe which fueled the gold trade in the area.
because it has a good route to trade and sell
the language of kilwa is mainly kiswahili,though the kisongo could be one of the dialect of kiswahili spoken in kilwa.
because it was at the cross lines