Why did they call Andrew Jackson "Sharp Knife?"

Answer :

Answer:His treaty punished both the Red Sticks and the Creek who had fought by his side with a cession of 23 million acres-nearly half of the Creek land. His terms and unwillingness to negotiate earned him the Creek nickname of "Sharp Knife."\

Explanation:

Jackson had created a treaty who punished both the Red sticks and the Creek who had fought with him. His unwillingness to negotiate got him the nickname “Sharp Knife”.