(Thanks to Ms. Hawes for these)

Serbian
[named] Princip
Assassinated
[the] ARchduKe
[of Austria-Hungary]
(yeah, I kinda had to fudge this one)
The MAIN reasons are:
Militarism
Alliances
Imperialism
Nationalism
And the Four Reasons for the U.S. Entering WWI Were. . .
(write a reason, the year and draw a picture to help you remember)
1 Sinking of the Lusitania, 1915

2 Zimmermann telegram, 1917
3 Unrestricted submarine warfare, 1917
4 Russia leaves the war, 1918
or
Allies with France and England
WWI started in Europe in 1914 but the U.S. didn’t enter the war until 1917.