Late.
The US joined the first world war in April, 1917. Why? Because President Wilson could no longer ignore the scale of the fighting. Germany started attacking every ship to approach Britain, which of course included US ships.
I can't think of any real significance. Perhaps knowing the US had joined the war frightened the Germans and their allies into running away?
New york i believe sorry if im wrong
When Lincoln, at last, stood before his fellow countrymen on March 4, 1865, and had only 703 words to share, the American public was dazed. The President had not attempted the North a victory speech, nor did he excoriate the South for the sin of slavery.
Tsar Nicholas | abdicates
Bolsheviks seize power
Russia becomes known as the USSR
Lenin dies
Stalin comes to power