Which factors in West and East Africa allowed their cultures to endure?

In 4 sentences

In West Africa, one factor that allowed their culture to endure was the strong emphasis on oral traditions, allowing their history and traditions to be passed down through generations. Additionally, the presence of stable empires and kingdoms provided a sense of continuity and unity within the region. In East Africa, factors such as the development of Swahili as a lingua franca and the thriving trade networks along the coast helped to create a sense of cultural identity and connection with neighboring regions. Lastly, both regions were able to adapt and incorporate outside influences while still maintaining their unique cultural practices, contributing to the longevity of their cultural heritage.