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?

Chapter 20, online primary source, lecture, and image selections: Buffington (Links to an external site.)Links to an external site.;Boy Scouts (Links to an external site.)Links to an external site.; Wilson (Links to an external site.)Links to an external site.; American Entry into WWI (Links to an external site.)Links to an external site.

http://wps.prenhall.com/wps/media/objects/823/843383/22_boysc.HTM

https://sourcebooks.fordham.edu/mod/1918wilson.html

https://www.youtube.com/watch?v=AaVP4NPTzS8

http://wpscms.pearsoncmg.com/wps/media/objects/1676/1716309/documents/doc_d030.html

Recruitment Posters [on MO7: Overview page]

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?