In the 1870s, the system of sharecropping failed to
a-reincorporate the south into the united states.
b-provide tenant farmers with any opportunities.
c-return abandoned land to its former owners.
d-stimulate and grow the southern economy.

D-stimulate and grow the Southern economy.

Explanation:

Sharecropping is a kind of farming in which families lease little plots of land from a landowner as an end-result of a segment of their harvest, to be given to the landowner toward the finish of every year.

Distinctive sorts of sharecropping have been polished worldwide for quite a long time, however in the country South, it was commonly practiced by previous slaves. With the southern economy in disorder after the abrogation of servitude and the decimation of the Civil War, strife emerged amid the Reconstruction time between many white landowners endeavoring to restore a work constrain and liberated blacks looking for financial freedom and autonomy.  

In spite of the fact that it was at first imagined as an approach to improve the economy and have it back going, it was a fruitless endeavor.