The "official answer"
World War 1 was started because there was a lot on tension between countries over who owns what territory. Then, Archduke Franz Ferdinand of Austria-Hungary was shot. This caused Austria-Hungary to go in a frenzy, and that was the beginning.
What two empires are you referring to?
Although tension to some extent always existed between the colonies and Great Britain, the most divisive point came when the British began to tax the colonies after the French and Indian War, which the colonists heavily resented since they had no representation in Parliament.
Explanation: The main reason why many enslaved people decided to join the British forces during the Revolutionary War was because they were seeking liberty. The slave population believed that they had better chances of being able to gain liberty if they were to side with the British forces.
Answer:
B) laws used by northern states to control african americans
Explanation:
Hope this helps !