This isn't specifically an essay question, but it does tie into what I'm currently studying - the loss of the Thirteen Colonies.

Looking specifically at the decision to seek peace and the end the war, there seems to be a few main factors that stand out: the sheer cost of the war, the disruption of change and the French and Spanish intervention in the war.

From the textbook used for the course, it states that the without dispute the most significant factor was France and Spain's entry into the war. But the problem is that it doesn't provide an explanation as to why this would be the case.

From what I understand, I can see that Britain fearing a possible invasion by France was more of a concern than retaining the colonies. But is there more to it than that? If there's any resources that could guide me to an answer that would be fantastic.