Today's lesson continued the focus on African Kingdoms. Mercer reviewed material about one of history's most wealthy people in the world to this day. Mercer learned that he lived from 1280 to 1337 and is considered the king of Timbuktu because of his influence on the city's commerce and culture. He also owned the Bambuk gold mines, which account for more than 50 percent of today's world supply. Its territory produced half of the world's gold stock. So it is not hard to believe that his wealth cannot be expressed in dollars, euros, or any other amount of currency. Mercer spent the remainder of class learning fun facts about kings in Africa. Mercer was on task.