Why Do You Think the US Was the Last Nation in the Industrialized World to Permit the Institution of Slavery?

"From it's creation in 1776, the United States has always stood for enlightened concepts and has therefore attracted people from all over the world. The first amendment allows freedom of religion and the rights associated with free expression. Our legal system provides many safeguards for our people against unjust arrest and imprisonment. We have a free enterprise economy. People are allowed to vote and there is 'no taxation without representation.' With all this in mind, why do you think the U.S. was the last nation in the industrialized world to permit the institution of slavery?
Essay:
Slavery has been a problem since the beginning of time. So why should the American colonies be any different? Slavery was introduced into the "new world" in 1606, and it grew rapidly in the south until the time of the revolutionary war in 1775. …