Over the same period, certain other factorsâfor example, higher energy costsâhad a greater effect on food prices than did the use of ethanol as a motor fuel.â. Congressional Budget Office, The Impact of Ethanol Use on Food Prices and Greenhouse-Gas Emissions, April 2009.
Thousands of innocent Jews, who had also suffered from the plague, were slaughtered in dozens of European communities. Social and Economic Effects of the Black Death. Some social changes caused by the Black Death were positive. Before the plague, peasant serfs were confined to their lord's estate and received little or no payment for their work. Overpopulation and shortage of resources led to malnutrition and extreme poverty for many peasants.
What impact did the great migration of African Americans in World War 1 have on American race relations? During the Great Mirgation, Africans Americans started moving North  for job opportunities since all the previous men who worked in  factories were recruited fro war through â¦ the Selective Service.People in the South were obviously racist against the African  Americans, so during the Great Migration, the right to vote caused  a lot of controversy. This is because when the African Americans  moved to the Norht they were given the right to vote.