The short answer is No.

Unification was the biggest challenge facing the Founders. In fact, while there were skeptics, one of the major arguments in Parliament for military intervention was the fact that the colonies had very little history of cooperating with each other, and would be easily defeated. It wasn’t until the British Army invaded Boston in early 1775 that independent militias from different New England colonies operated under a cohesive directive and chain of command, forming the Continental Army. 100,000 men enlisted in the Army, but more than twice that many fought in militias and stayed close to home, defending only their local or regional areas.

There is a false notion that the British had the Colonists beat into submission and all of a sudden there was a dramatic turning point. In reality, from the very beginning, the British, coming from an institutionalized place of power, slowly lost the war little by little until ultimately surrendering. As the war waged on more colonies sent more troops. In 1776, the Continental Army became a standing Army . This was the seedling of The United States of America; officers and enlisted men from all 13 colonies operating under a chain of command with a common immediate goal -expel the British Army- and long term goal in defending future invasions.

So before 1776, there was probably very little support for a unification of all 13 Colonies into one single entity. But as the war waged on and victories mounted, the idea that cooperation and unity was the best way to peace, took hold. By the end of the war, most members of the Continental Congress agreed that at the very least something of alliance was necessary to ensure mutual prosperity and homeland security. The form that alliance took was contentious, to say the least. In many ways, it remains contentious to this very day.