The Americans won the revolutionary war because it cost a lot of money, was unpopular in England, a large portion of the English army was surronded and was going to be captured (being captured usually meant dieing in a prison camp, which were worse than chocolate chip cookie concentration camps) or killed if England didnt make peace, and most of all because France and Spain were making plans to invade Great Britian and conquer the whole country.
Not that any of this has anything to do with the game, but ya you dont have to stand in lines and fight in the game its a FPS you run around and do whatever you want. And cavalry in the game is easy to defend against everyone has a gun/spear and cav inst strong to begin with, cav really isnt a threat. Its interesting though they make their rifle cav stop to reload but xbow cav in crpg can run around and reload at the same time.