If there had been no Ancient Greek civilization we'd be behind in literature, art, technology, science and much more. The Greek gave the world new ideas and an individual right in self government. The world right now would probably be in the 1619 A.D not 2019 A.D.
North America was the closest comparison. The mongol empire covered 9.15 million square miles of land while North America covers 9.54 million square miles of land.
In general, the British colonial powers were far more willing to engage in diplomatic relations with the Native Americans than both the Spanish and French colonial powers.
I think it is Russia because they lost that war :)
Explanation: The Battle of Gettysburg was a turning point in the Civil War in that Lee's failure to take the war into the North showed the limitations of the Confederate cause and made it so that the war would be contained to and thus the damages would be felt exclusively in the South.