1. French military had come to American's aid
2. British citizens were tiring of the cost warring with the colonies
Once the Americans decided that that will fight for independence, it was all or nothing. The Americans were willing to fight, and they had lot of motivation and desire, but the problem was that they lacked weapons, proper military training and organization. This caused problems because the British army was the total opposite, having the newest weapons at disposal, good organization, and excellent military training. Even though there were some wins on the battlefield, the Americans started to get very concern, as as the things were going eventually the British army would defeat them. This all changed though when the French decided to get involved. The French had big interest in this conflict, one was to make the British weaker, and the second to have a new. large, powerful ally in the Americas. The navy of the French created chaos among the British, as many ships got destroyed. This resulted in disruption in the communication between the navy and the troops on the land. The organization quickly start to fall apart, and on top of it, they were not able to mobilize the loyalists on American soil. Eventually this led to win of the Americans and gaining independence, while the British lost a valuable colony in the New World.
The British citizens were also becoming very frustrated with the situation. The reason for this was that they were getting tired of constantly being in war with some of their colonies. Instead of having the colonies for their benefit, they were actually causing lot of troubles, which also led to economic problems, so the people were simply willing to give up on many of the colonies.
