In the late 1800s, the system of sharecropping in the South failed to

Free slaves economically--sharecropping forced former slaves back to the land they had worked and kept them indebted to the landholder.  

The system of sharecropping meant for a piece of land to farm, a person would owe a portion of their crop to the landholder. This program kept blacks enslaved to the land not allowing them true freedom to leave and become ecnomically independent.

Explanation:

hope it helps

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering