Describe the split in the muslim community caused by muhammad death

The Prophet Muhammad was the religious and political leader of Muslims during his time. With the spread of Islam under the leadership of Muhammad grew a formidable empire stretching across Arabia. Disagreement over who should succeed Muhammad as caliph, that is the religious and political leader of the Muslim world resulted in a split in the community that has lasted for centuries.

nativists tried to get rid of the immigrants as they thought they were going to ruin the u.s.  

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".