My bigger question is why did WE get involved?
A combination of Wilson hubris and Wall Street wanting its loans to Allied Powers to not be in jeapordy for repayment.
Sinking of the Lusitania with Americans on board.
Please research the ‘Zimmerman telegram’ and the re-introduction of unrestricted submarine warfare by the Hun in 1917.
A better question is, after the rape of Belgium, the use of chlorine, mustard and phosgene gas, the sinking of the ‘Lustania’, the ‘Black Tom’ terrorist attack, etc., why did the US wait so long to enter the war against the Central Powers?
Simple answer, the largest number of immigrants to the US at that time had come from GERMANY and AUSTRIA. Besides, US industries were able to sell to both sides, though mostly to the Triple Entente, making incredible profits until 1917.
1) A German deal with Mexico for them to “help” if the US entered the war that included returning California, Texas, and the rest of the US Southwest to Mexico.
2) German U-Boat activity sinking american flagged freighters.
Bad enough you threaten the Southwest US, but if you are messing with the profits of maritime insurance companies, WATCH OUT!!!
The progressive globalism of President Wilson.