Final answer:
The Bantu migrations had a significant impact on Africa's economic and cultural practices, leading to the development of complex settled societies and large African states.
Step-by-step explanation:
The Bantu migrations had a significant impact on Africa's economic and cultural practices. As they migrated, the Bantu encountered different groups and borrowed and adapted their innovations in plant and animal husbandry and metalworking. This led to the diffusion of common cultural advances and the development of complex settled societies, forming the basis of large African states like Great Zimbabwe.