Final answer:
Sharecroppers were tenant farmers who gave a share of their crops to the landowner as rent, which is true. This system was common in the Southern United States post-Civil War.
Step-by-step explanation:
The answer to the question is a. True. Sharecroppers were indeed tenant farmers who provided a portion of their crops to the landowner as rent. This system became prevalent after the Civil War, particularly in the Southern United States. It evolved as a way for the newly freed slaves and poor white farmers to earn a living without direct cash payments. Sharecropping allowed them to use a piece of land in return for giving a share of their harvested crops to the landowner, which formed the basis of their tenancy agreement.