What did the columbian exchange cause?

How did the new working class of the industrial revolution differ from the working classes of the earlier, farm based economy?

This photo shows an early mesoamerican structure, specifically from the zapotec culture. what was this structure most likely used for? a. creating terraces for farm fieldsb. practicing religious ceremoniesc. playing a ball game with stone hoopsd. protecting a city from invading armies

How did the supreme court decision in the slaughterhouse cause have an affect american business