American point of view: The British used the colonies as a way to make money. They had the power to enact laws in Parliament outside of America which significantly affected life and trade in the 13 colonies. These Acts of Parliament benefited the British but not the colonies. In addition, colonists were not afforded the same rights as the British people, nor did they have any representatives in the British Parliament to present their points of view. The colonists protested and their protests led to revolution.

British point of view: The British view on the American Revolution was that the colonies owed the empire for everything it had provided, such as protection, economy, and supplies. In reality, the British people were divided about the outbreak of war with what was then their colony—over how bad it was, whose fault it was and what to do about it. (time.com)

View from Canada: "At the time of the outbreak of the American Revolution, the population of the Canadian provinces was not large by comparison to the population of the thirteen colonies. Nova Scotia, which had not yet been divided from modern New Brunswick, had some 20,000 inhabitants, of whom approximately 12,000 were from New England. The majority were living in scattered rural settlements and had little in the wayof political interests... According to a Nova Scotia petition laid before the Continental Congress, some six hundred settlers were believed to be able and willing to aid the Revolution. The white population of what is now Ontario was virtually non-existent. Quebec had a population of approximately 90,000... From 10% to 15% of the adult male population of Quebec was sufficiently active in support of the Amercian Revolution to warrant their names being recorded so in government records. Large numbers of others provided more or less passive support; they sold supplies, mounted guard, provided transportation services when they were requisitioned, etc. Most of the rest of the population was deliberately neutral, apparently seeing the dispute as none of their business..." In addition to the Quebecois, many Acadians joined the American Revolution. They strongly disliked the British because the British exiled them from Acadia in 1755. Many spent time exiled in the American colonies and, thus, became fluent in English.
(Canadian participants in the American Revolution, an index, by Virginia DeMarce - familysearch.org)