The correct answer is alternatives A)Sugar and A)Tribes and Kingdoms.
There was a growing demand for Sugar in Europe, which was used to make alcohol such as rum. Political turmoil was another factor that led to the growth of the slave trade, since the Tribes and Kingdoms in West Africa were constantly at war with each other.
Sugar is an important item in the production of alcohol. It has many uses, and was a valuable asset in trade.
African history is full of conflicts. Wars between tribes and kingdoms happened throughout all of the African history.
