Yes they did have a emperor in the Heiam era
Answer:
Due to the amount of slaves a ship would or could carrh,disease would spread quickly, and more slaves would die on board.
Answer:
War is politics by other means. In other words, when political leaders cannot get what they want through peaceful methods, they judge the cost of achieving their goal through military force. Preventing armed conflict requires raising the cost of using force. Until the cost of any armed conflict is prohibitively high, conflicts will continue.
