He aided the allies with supplies, and later joined the war, with now America involved, the allies now can push back on Germany, while Japan started to lose much more thanks the emborgo that America imposed on them, and America was also constantly attacking them, in conclusion, Roosevelt really impacted the result of the war.
roman roads and sea routes
I don't understand the question...
During these time many things happened to the U.S such as the declaration of independence, starting of thanksgiving, civil war, during the civil war the U.S had learned so many things such as new strategies, better ways to use guns and cannons.
The first true slave society in history emerged in ancient Greece between the 6th and 4th centuries.
In Athens during the classical period, a third to a half of the population consisted of slaves. Rome would become even more dependent on slavery.