Demand was high and slaves (especially african slave trade) were easy and cheap to get since tribes would kidnapp other africans in exchange for guns and 'modern' (for their time) items they wanted. In new lands people needed slaves to do a lot of the work they were unable to do.
Answer: The colonists felt that King George III had failed them in legislation, judicial rule, military conflict, and lack of protection. They were angry that the colonies were forced to follow British rule but were not allowed representation in Parliament.
Explanation:
Mongolia gained control of the route in 1275 and kept it that way until it closed.