the United States' nickname is America
Yankees or Yanks
Yankees
Gringo.
Buffalo soldier
The Darks.
Doughboys. Yanks.
War Hawks
It is the British's nickname for the German is 'Jerry'. In WW1 they used "Hun". Some continued that usage into WW2. The American's nickname for the German is 'kraut'. The German's nickname for the British is 'Tommy', and for the Americans is 'Ami'.
Texas was named "Tejas" by Native Americans, Tejas meaning Friendship
Buffalo Soldiers.
Scalawag
Massachusetts got the nickname "the Bay State" because of it's many bays. The name Massachusetts came from the Massachuset tribe of Native Americans that lived in Massachusetts.
Bombingham because of the racial bombings done to African Americans during the struggle for Civil Rights.
There is no National Football team named the "Proud Americans" But if that was a nickname for a team, my closest guess would be the New England Patriots