1) African societies developed in diverse ways depending on their environments, with some taking nomadic lifestyles while others transitioned to settled agriculture.
2) The kingdom of Aksum in Ethiopia became a powerful trading nation by controlling trade routes between Africa, India, and Europe. It adopted Christianity in the 4th century AD.
3) Starting around 1000 BC, Bantu-speaking peoples migrated southward from their homeland, spreading their languages and skills across much of sub-Saharan Africa over the next 1500 years. Their migrations were driven partly by population growth, environmental changes, and conflicts between tribes.