1. Taxed them without representation.
2. British soldiers fired on a crowd of rioting civilians, killing about 5 people (this is referred to as the Boston Massacre.)
3. Imposed "hidden" taxes in hopes that no one would notice.
4. Gave the East India Company a monopoly on tea and told the colonists they were not to buy tea from anyone else.
5. Ignored the First Continental Congress' protest letter.
6. Sent British soldiers to seize the munitions stash at Lexington and Concord.
7. The British King George III was not very smart, and appointed people to Parliament that were also not very smart.