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.
According to the National Center for Educational Statistics, 18.2 million students enrolled in college in 2007. Overall, around 39% of 18- to 24-year-olds were enrolled in college that year, and an additional 447,000 students were attending non-degree institutions of higher learning.