Which of these innovations was spread to southern africa as a result of the bantu migrations? a.) gunpowder. b.) iron working. c.) crop rotation. d.) subsistence farming.

The correct option is D subsistence farming. One of the innovations spread to Southern Africa as the result of the migration of Bantu-speaking people, which was a series of migration of the proto-Bantu language speaking group from central Africa across the sub-Sahara Africa, was the introduction of new farming techniques.  

Agriculture and farming techniques improved thanks to the ability of Bantu-speakers to reproduce and expand more quickly, surviving thanks to the plants and animals spread and cultivated by them.

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.

answer; /// i believe the correct answer is (oasis)