1619, the New World. A Dutch ship makes port at the colony town of Jamestown, Virginia. Onboard are supplies from Europe and a new type of cargo. 20 African men disembark from the vessel, in chains they walk towards their new masters. The age of slavery in America has begun. Over the next 2 centuries, great European powers would contest their dominance over the Slave trade, a lucrative business that brought in millions every year (but don’t take my word for it, take this TEDed talk instead). Spain, Britain, Portugal, France and even The Netherlands would compete to see who could ship the most slaves out of Africa to their colonies abroad. Slavery in the Americas was mostly controlled by Spain, who brought millions from Africa to their colonies in the Caribbean (Haiti, Cuba and Puerto Rico) to work on the tobacco, cotton and sugarcane plantations that were then sent back to Europe to be traded in the thousands of tonnes. In America, slavery gained its roots when European settler (mainly those from Spain and also Britain), shipped their own slaves from Africa. The journey was harsh, with “slave-ships” being notorious for their cramped conditions and horrible treatment of this “cargo”. The northern states weren’t as involved in slavery as the southern states, with many cotton gin plantations there having anywhere from 10-50 slaves working on the premises. It would continue this way for many decades, with the occasional rebellion, congress act and other legal actions slowly granting rights to the slaves. The final act would come in the US Civil War, when Abraham Lincoln gave the “Emancipation Proclamation” in 1863, declaring that all slaves were now free men and no longer served their white masters. For the next two years however, many former slaves died on the battlefields of the US Civil War trying to gain their freedom. With the Union states victorious, slavery was abolished in the US and black men were now able to gain some freedom. I’ll let this History channel link explain more.