Agrows a crop on land owned by someone else and gives the landowner part of the annual yield.
a. carpetbagger
b. sharecropper
c. muckraker
d. scalawag

It would be a "sharecropper" who grows a crop on land owned by someone else and gives the landowner part of the annual yield, since this was a common practice after the Civil War in the US, when many poor black farmers did not have the necessary supplies or land to do their own farming.