In the 15th and 16th centuries, Europeans were interested in the trading going on in African nations and their sophisticated trading networks. This gave the Europeans the idea to get involved in trading human beings. They took the enslaved people from West Africa to the Americas.
In the Americas people were now getting used to the idea of owning their own land. They didn't want to work for other people now that they had some freedom to work for themselves. Convicts were being used to work the land at the time, but the landowners found that these people were just not getting the work done. The planters and overseers at the farms and plantations, then began to purchase the enslaved people the Europeans were bringing over. The action that the Europeans took by selling people, affected slavery immensely. This would go on for generation after generation. The horror of people being taken from their native homes to become sold as slaves.
With the Europeans now becoming involved with the slave trade, they brought it to the Americas. It affected this country in one of the worst ways possible. You have to wonder, if the Europeans hadn't come here with the enslaved people what would have happened? Would some other country done it? Would we, as Americans, discovered what was going on? Would there have been a way to keep this from ever happening? This is how the Europeans changed to face of slavery forever.
sorry if its to long :(