The Bantu migration significantly transformed Africa's cultural landscape by introducing new technologies, languages, and agricultural practices. Among the options provided, the most accurate impact is: The Bantu brought knowledge of iron tools and weapons.
This migration facilitated the spread of ironworking techniques which allowed for more efficient farming and hunting practices, ultimately leading to population growth and the establishment of various communities across sub-Saharan Africa. Additionally, the Bantu migrations led to the diffusion of languages and cultural practices, fostering a rich tapestry of diverse yet interconnected cultures.