Originally Posted by
gumboot
Another thing to consider is that shortly after the revolutionary war the British Empire started to become rather more anti-racism and slavery. Had the US remained in the Empire like the other colonies they most likely would have adopted the rest of the Empire's attitude to slavery and non-white peoples much sooner, and the Civil War and more recently Civil Rights movement might have not been required.
Or, Robert E. Lee might have beaten up people in red coats instead of people in blue coats.