The document summarizes the Atlantic slave trade that took place between 1450 and 1865. It discusses the different phases of the slave trade including the capture of Africans in their homelands, transporting them on the brutal Middle Passage across the Atlantic Ocean, and seasoning them through forced labor in the Caribbean. It notes that 30 million Africans were taken from their homes, with 10 million dying during the capture phase and another 10 million dying during the Middle Passage. The document also examines the triangular trade route between Africa, the Caribbean and North America, and the growth of the slave population in the Americas to over 4 million by 1860 due to demand for labor and inventions like the cotton gin.