Biography -- History Biography 3 Politics and government 2 Commerce -- 1 Economic development 1 Explorers -- 1 more ... Foreign relations -- 1 Heads of state 1 Heads of state -- 1 History -- 1 Intelligence officers -- 1 Kings and rulers -- 1 Kings, queens, rulers, etc 1 Ming dynasty, 1368-1644 1 Officials and employees -- 1 Politicians -- 1 Presidents -- 1 Prime ministers -- 1 Statesmen -- 1 less ...