Why did Dysentery spread easily among WWI soldiers?

Explanation:

Due to lack of sanitation in the trenches, dysentary spread quite easily. More specifically it was contaminated water which got them sick in the war.

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".

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question - in the 1900s there were two competing views about the environment that often pitted industrialist and conservationist against one another. how were these two competing views demonstrated by the environmental policies of president roosevelt and president taft?

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