Exploration and the Colombian exchange had major affects on the world that you can still see if you look today. In case you don't know what the Colombian exchange is, it is the trading of goods between the "Old" and "New" world. Some of the positive affects that exploration and the Colombian exchange are that because of the trading that occurred between them, we have many foods today that wouldn't have existed without the Colombian exchange. Just to give you one example, we wouldn't know what a hamburger is. Some of the negative affects of exploration and the Colombian exchange are that when the Europeans came to the "New" world, they spread diseases that wiped out most of the Native American population. Also, the Europeans forced the Native's to convert to Christianity or to die. All of the Native's were forced to be slaves. This is also how the idea of slavery came to be in the United States of America.