-In 1790 there were six slave states; in 1860 there were 15 -From 1790 until Congress banned the importation of slaves from Africa in 1808, Southerners imported 80,000 Africans. -By 1860 approximately one in three Southerners was a slave Which event played the GREATEST role in creating these conditions in the South during the Antebellum era?

The invention of the cotton gin.

Explanation:

The South being favourable to the climate depended on agriculture. Before the invention of Cotton Gin, cotton production remains limited to slaves. With the coming of Cotton Gin by Eli Whitney in 1793, it reduced the time and labour by removing seeds from the fibres. It increased the need for slaves in the plantations for cultivating cotton and picking the cotton fibres in fields. Cotton cultivation became beneficial for the cultivators. Many of the states in America began to emerge as slave states as the cotton production turn out to be profitable.

it proved indian land claims were unjustified.

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