The Columbian Exchange was the exchange of various goods, slaves, ideas, inventions, etc between the new and Old World.
One good aspect of it was the fact that it greatly improved trade, wealth, and agriculture. They brought crops to other areas to allow them to be farmed there as well. It greatly boosted the Economy.
One downside is slavery. Since The Columbian Exchange was such a big event the demand for slaves grew rapidly. This meant more people had to be taken or sold into slavery to keep the slave trade going. This caused many people to live lives as slaves.
The Columbian Exchange was the transfer of ideas, plants, people, and crops between the new and Old World.
Something good about the Columbian Exchange was the new plants that were brought to America. Before things like rice and horses were in the New World, but new things like corn and cattle were introduced.
The bad thing was the slave trade. Because of the new crops being introduced, slaves were needed to plant, tend to , and harvest these new crops. Also, new disease were introduced that killed million of Native Americans.