US contribution and involvment into the Great War: USA joins the Allied forces

 image selections

Consideer the follwoing leaders

Buffington 

Boy Scouts 

Wilson 

American Entry into WWI 

 

Question:

Why did the United States, so determined to stay out of the Great War in 1914, join the Allied cause enthusiastically in 1917?

What do you think the outcome of the Great War would have been if the U.S. did not get involved?