Answer:
No passports or visas were needed to enter the United States through Ellis Island at this time. In fact, no papers were required at all. More than 12 million immigrants passed through Ellis Island between 1892 and 1954—with a whopping 1,004,756 entering the United States in 1907 alone
Explanation:
The three European nations who fought together in World War I were Russia, Great Britain, and France :)
a meeting in Philadelphia in 1787 where delegates decided to throw out the Articles of Confederation and draft the Constitution
It was important for couple reasons;
1. In theory, opened a second front the Germans had to deal with. This was something the Russians had been demanding for a while. Unfortunately, Europe turned out to be quite tough to get through and did not divert as much as German troops as was hoped, and
2. Another important effect was the extra experience it gave allied forces in the amphibious warfare and fighting the Germans in general.
Good luck :)