Question

Knowledge of iron metallurgy helped this African tribe to migrate throughout the continent.

Bantu
Swahili
Zulu
Khiosan

Answer 1

The correct answer is Bantu.

Answer 2

Many archaeologists believe that the Bantu expansion was caused by a development of agriculture, and the use of iron, which permitted new ecological zones to be exploited, therefore helping those people to migrate.

So the correct answer can only be:

Bantu