They needed to find more land for more opportunities for factories and trading. To spread their civilization to other people
The 1763 Treaty of Paris ended the major war known by Americans as the French and Indian War and by Canadians as the Seven Years' War / Guerre de Sept Ans, or by French-Canadians, La Guerre de la Conquête. It was signed by Great Britain, France and Spain, with Portugal in agreement. Preferring to keep Guadeloupe, France gave up Canada and all of its claims to territory east of the Mississippi River to Britain. With France out of North America this dramatically changed the European political scene on the continent.
Because of the French and Indian war. Taxes were the only way to pay for that war. The British thought that the Americans had to pay some of the tax for protection.
I think citizens should know about pearl harbor because it was an American tragedy and it got the Americans into WW2.