Speculations that, in the absence of the American Revolution, the treatment of indigenous peoples would have been more just or slavery would have been eliminated sooner demonstrate severe historical stupidity. There were other factors at work in the development of societies in North America beyond the actions of individual colonists or rulers.
In conclusion, the American Revolution was a successful revolt against the British Empire. It ended slavery, founded a nation, and created an economy based on free trade and entrepreneurship.
Decades without slavery is a major humanitarian advantage that almost definitely outweighs whatever benefits the colonies received from freedom. The greatest advantage of the revolution for colonists was that it increased the political authority of America's white male minority. Before the war, colonial legislatures had no real power; they could propose laws but not veto them. After the war, state governments were given more power over their territories; in some cases, they could even tax themselves. This gave white men in states such as Pennsylvania and New York enough clout to push through changes to their own systems of government that benefited them financially.
Colonists also gained some small advantages by being an exit point for slaves fleeing their owners. Some slaves who were able to reach Canada or the British Isles were granted their liberty. In addition, some colonials including Benjamin Franklin helped slaves escape to freedom in other parts of the world. Finally, some revolutionaries such as Patrick Henry voiced opinions against slavery, which encouraged others to do the same. However, as soon as peace was made with Britain, most colonies went back to being slave societies once again.
In conclusion, the American Revolution provided whites with advantages that benefited them politically and financially. It also allowed slaves to flee their owners, which meant more space for people who would become citizens of these states.
The American Revolution instilled in its citizens a new worldview that would have far-reaching consequences in the future. Slaves and women, for example, who were denied instant equality, would eventually find inspiration in revolutionary ideals. Americans grew to believe that their struggle for liberty was a worldwide one. It was not just a question of winning or losing states in the young country, but also of winning or losing battles across the globe.
As for those who fought against America in her war for independence, they too had grown convinced of their cause's rightness. The British empire, they believed, needed reining in and the United States would help them do it.
American leaders saw things differently. They knew that they had won independence with little more than a shrug from Britain, but they also knew that they needed to put down roots if they wanted to keep their own government stable. They realized that they needed to convince other nations that freedom could be spread by example as well as force, so that when Britain tried to clamp down on revolutionaries there would be others ready to resist.
America's declaration of independence made reference to "the principles upon which the society of nations is based," which shows that its authors believed that their actions would be heard around the world. In fact, the French even asked America for assistance when they decided to revolt against Britain, proving that this new nation had become important to people beyond its borders.