One thing to keep in mind is that many of the American colonies were first founded by people trying to escape religious persecution in England. As the British government became more involved in the affairs of colonies, people began to worry that they would once again lose their freedoms.
The French and Indian War took place between the American colonies and New France. Both sides allied with different Native American tribes. This war lasted from 1754 to 1763. British troops not only helped the colonists to fight the war, but were stationed in the colonies for protection after the war. These troops weren't free and Britain needed money to pay for the troops. The British Parliament decided to tax the American colonies to help pay for the troops.
Prior to 1764, the British government had pretty much left the colonists alone to govern themselves. In 1764, they began to impose new laws and taxes. They implemented a number of laws including the Sugar Act, Currency Act, Quartering Act, and the Stamp Act.
The colonists were not happy with the new taxes. They said they should not have to pay British taxes because they had no representatives in the British Parliament. Their motto became "No Taxation Without Representation."
Many colonists began to protest against these new British taxes and laws. A group called the Sons of Liberty formed in 1765 in Boston. During one protest in Boston, a fight broke out and several colonists were shot and killed. This incident became known as the Boston Massacre.
The British decided that the colonies needed to be punished for the Boston Tea Party. They issued a number of new laws that the colonists called the Intolerable Acts.
The increased laws punishing the colonies did little to control the colonies as the British had hoped, but actually had the opposite effect. The laws caused the colonies to become more united against the British. Many colonies sent supplies to help Boston during the blockade. Also, more and more colonists throughout the Americas joined up with the Sons of Liberty.
In 1774, twelve of the thirteen colonies sent representatives to the First Continental Congress as a direct response to the Intolerable Acts. They sent a petition to King George III to repeal the Intolerable Acts. They never got a response. They also established a boycott of British goods.