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.

the decreasing neutrality of the u. s. in world war i

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answer: secession

secession, as it applies to the outbreak of the american civil war, comprises the series of events that began on december 20, 1860, and extended through june 8 of the next year when eleven states in the lower and upper south severed their ties with the union. the first seven seceding states of the lower south set up a provisional government at montgomery, alabama. after hostilities began at fort sumter in charleston harbor on april 12, 1861, the border states of virginia, arkansas, tennessee, and north carolina joined the new government, which then moved its capital to richmond, virginia. the union was thus divided approximately on geographic lines. twenty-one northern and border states retained the style and title of the united states, while the eleven slave states adopted the nomenclature of the confederate states of america.

explanation: