One reason is the policy of salutary neglect. Salutary neglect was a policy of Britain which basically meant that the colonies didn't have to follow all the British laws as long as they didn't cause any problems. People were satisfied with ti because they weren't bothered by Britain. When the French-Indian war ended, the policy of salutary neglect was abandoned and the crown started pressuring people more to obey the laws and this caused mass dissatisfaction.
Another is the political power that they had. Before 1763, they were allowed to purchase land and deal with the natives in such purchases and if they were rich enough they could even start their own colonies as governors or rule their own colony as a company. This was forbidden after 1763 and all governing started belonging to the British crown exclusively.
Not allowed to have their own occupation
When new america first came about, there were 13 colonies which were all on the eastern coast, as time passed, they were like well how about we expand our nation soooooooo......... they sent Lewis and Clark on an expedition to find the other end of the land so when they completed they were like that was hella far and good luck sooo as cocky as they come we decided to take it we thought we were here first so your sol. so when the natives didn't want to leave we decided to take it by force and we grew a hatred towards them for them not giving us what was theirs, so finally we got a president with brains and he was like we will buy it from you so we jiped em out. we would buy hundreds of acres for a few dollars since they didn't really know, they didn't see the trap so we tricked them into giving us there land for virtually nothing.
Romans first
Persians next
Then Greeks
Lastly assyrians