Originally, electors cast two ballots for president and whoever took second place in the tabulation became vice president. Starting in 1804, the president and vice president were elected on separate ballots as specified in the Twelfth Amendment to the United States Constitution which was adopted in that year.
North Africa and West Africa had limited trade because of Sahara until the Camel became domesticated, they started to trade. The only way they traded was from the Atlantic coast which was long journey.