Which of the following innovations would be MOST likely to help African farmers?

Development of frost-resistant strains of seeds
Invention of grain seeds that grow in hot, arid climates
Introduction of farming methods suited to growing food in limited space
Development of chemical fertilizers that improve nutrients in the soil

Invention of grain seeds that grow in hot, arid climates

Explanation:

Most of Africa is very hot and arid in climate, and the invention of grain seeds that grow in hot, arid climates would help farmers grow more grain.

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.