After slavery was abolished, most white southern planters decided
to switch industries.
needed a new system of labor.
experimented with different crops.
divided up land ownership.

  Needed a new system of labor.

Explanation:

  After the Civil War began the age known as Reconstruction Era. The Southern faced a difficult task. They had to develop a new system to replace the slaves.

  It was hard for the planters to adjust over the new laws. They were not accustomed to the opposition of the free people. They were used to had all the control on their plantations.

  I hope this answer helps you.

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

c) troops march forward in close formation against newer, more accurate weapons