Slavery was practiced in some parts of Africa, Europe, Asia and the Americas for many centuries before the beginning of the Atlantic slave trade. There is evidence that enslaved people from some African states were exported to other states in Africa, Europe and Asia prior to the European colonization of the Americas.he Atlantic slave traders, ordered by trade volume, were: the Portuguese, the British, the French, the Spanish, and the Dutch Empire. Several had established outposts on the African coast where they purchased slaves from local African leaders.
Quick Answer. As of September 2014, the U.S. population is 318 million people and approximately 30 percent, or 95 million, have graduated college with a bachelorâs degree. Another 17 percent, or 54 million, have graduated with an associate's degree.
We focused on the age group of 25 years and over, because most American students graduate by the time they turn 25. According to census data, 209.3 million people in the United States are 25 years old or older, and 66.9 million have a bachelorâs degree or higher (such as a masterâs, professional or doctoral degree). That means about 68 percent of them do not have a bachelorâs degree.