Which event marked the end of fighting during world war i?
o the signing of the treaty of versailles
o the spanish flu pandemic
o the armistice
o the signing of the treaty of brest-litovsk

the signing of The Treaty of Versailles

Explanation:

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".