Interaction can be defined as the way in which people from a given community came into contact with another community. As humans cannot fully live alone due to the progressing day to day needs; interaction is inevitable among people because through interaction we was able to access different requirements. The following are the social and political factors which gave rise to interaction among the people of Africa;-
1.War: Some interactions were brutal and hostile as some strong communities attacked the weaker ones in order to control them. Some societies succeeded in their struggle while others failed. For example, from 1820s Egypt was in constant attacks to control the North-east and East Africa.
2. Migration: As communities grew in number this lead to a scarcity of resources, which forced others to migrate in search of resources that were and meeting other people with whom they created new social relations for example the Bantu migration and the Ngoni migration.
3. Intermarriage: This occurs when two people of different groups married and can be seen in the broader context of mixing of different groups in marriage, cohabitation or sexual relations. Therefore, this made African people interact and begin new communities.
4. Religion:Africans had their traditional African religions which acted as a symbol of unity and togetherness. Their religions brought them together.
5. Music and games:African societies had a rich history of music and games, as people from different communities interacted on different occasions sharing their experiences; this was mainly for entertainment and recreational purposes.