Here are some specific reasons why the colonists had difficulty uniting:
* They were geographically dispersed. The colonies were spread out along the Atlantic coast, from Maine to Georgia. This made it difficult for colonists to communicate and coordinate with each other.
* They had different economic interests. Some colonists were farmers, while others were merchants or artisans. They often had different priorities and didn't always agree on what was best for the colonies.
* They had different religious beliefs. There were many different religious groups represented in the colonies, including Puritans, Anglicans, Quakers, and Baptists. Religious differences were a source of tension and conflict among the colonists.
* They had different political views. Some colonists were loyal to the British Crown, while others were more sympathetic to the idea of independence. This difference in political opinion made it difficult to find common ground.
Despite these challenges, the colonists were eventually able to come together and revolt against British rule. This was due in part to the leadership of a few key individuals, such as George Washington and Thomas Jefferson. It was also due to the fact that the British government made a number of mistakes that alienated the colonists, such as imposing new taxes and restricting their trade.