Slavery has been around since the earliest civilizations, they have been a source of money but not all slaves were chosen because of their skin color many were prisoners of war sold into slavery by their own people. From the Ottoman Empire to the Roman Empire slaves were used and some of the things that determined the value of a slave was gender, age, and cooperation but slaves were also treated differently throughout civilizations. An example of this is there is accounts of slaves in the Ottoman Empire who had privileges and benefits but the American Indians and Africans who were treated very poorly. The African Slave trade was also very different from the regular slave trade. An example of this is they were taken from their home land and