The slave trade began in 1455 in [[Africa] as part of the [[Columbian exchange]]]. The pope gave justification to enslave non-christians in a papal bull. It became an important part of Africa's economy. It did not come to an end until 1800-1865. | The slave trade began in 1455 in [[Africa] as part of the [[Columbian exchange]]]. The pope gave justification to enslave non-christians in a papal bull. It became an important part of Africa's economy. It did not come to an end until 1800-1865. |