David Livingstone came to Africa in the 1840s and returned multiple times until his death in 1873. He was at first a worker in a cotton mill in Scotland, then trained as a doctor, joined a missionary society hoping to go to China but went to Africa instead. While in Africa he made it a point of trying to end the Arab slave trade. He kept pushing north from South Africa in the attempts to reach these unmet peoples. Finally he split ways with the London Missionary Society and went to work for the government as an explorer with the mission ...