Answer:
They defend their lands against Europeans.
Explanation:
One similarity among the African kingdoms was that they fought against the Europeans when they knew that they came here for their lands and their resources. they defend themselves with the help of their army. But some empires captured by the Europeans while the other are not because they have a strong army which are enough to prevent Europeans to captured their lands.
Franklin D. Roosevelt
Fun fact: FDR was the only president to be elected president for four terms. Later being the reason for the two term limit.
The government entry had to help out the most with every move that they would make. keeping everything centralized
Answer:
Through interaction between traders and the locals along the trade routes.
Explanation
During their trades operation, a lot of interaction happened between the traders and the local people. During those interaction, they started to learn about each other's religion, culture, scientific development in their hometown , etc.
This is where the locals learn about the religion of the traders. After the traders left, the locals will spread the knowledge about that religion to other locals and contributed to the increasing amount of followers of that religion.