-The increase of immigrants
-The aftermaths of WWI
I really don't know if what I said is correct, but I just thought of it as of what happened before 1920
D) The tenth amendment Hope this helps........
Emperor Diocletian would be the answer
Answer:
John Lincoln Clem, is known as Johnny Shiloh, which is a United States Army general who served as a drummer boy in the Union Army in the American Civil War. He got his fame for his bravery on the battlefield, becoming the youngest noncommissioned officer in Army history.
Explanation: