Plantation owners relied on labor in order to make a large profit. Fill in that blank

Slave Labor

Explanation:

It was free since they didn't pay their slaves and mistreated them

export

Explanation:

Plantation economies rely on the export of cash crops as a source of income. Prominent crops included cotton, rubber, sugar cane, tobacco, figs, rice, kapok, sisal, and species in the genus Indigofera, used to produce indigo dye. The longer a crop's harvest period, the more efficient plantations become.

- "it was a failure that was an embarrassment for the kennedy administration."

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