Which event had some economic effects? explain.

Assuming that this is referring to the same list of options that was posted before with this question, the correct response would be the "Neolithic Revolution," since this led to sustainable agriculture, which led to people developing trades that greatly enhanced the economies of early civilizations. 

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.