sprawling plantations alike switched
to cotton production. From 1790 to
1820, production of cotton in the
United States increased from 3,000
bales to 400,000 bales a year (each
bale weighed about 500 pounds), with
nearly all of it originating in the Deep
South. By the 1830s, cotton was Amer-
ica’s leading export product, and the
value of cotton exports eventually ex-
ceeded the value of all other American
exports combined. By 1860, cotton ex-
ports were worth $191 million, 57 per-
cent of the total value of all American
exports. Demand for cotton products
continued to grow throughout the
first half of the nineteenth century,
and planters all across the South be-
come wealthy on “King Cotton,” as
the crop came to be called.
The cotton gin dramatically
increased the amount of money flow-
ing into the Southern economy, but it
also renewed the dying institution of
slavery. Cotton producers needed la-
borers to plant and pick the huge
quantities of cotton intended for mar-
kets in Great Britain, France, and New
England, so slaves were assigned to
take care of this physically demanding
work. As cotton production increased,
so too did Southern dependence on
slave labor. From 1790 to 1810, the
number of African slaves on American
soil increased by 70 percent. The num-
ber of enslaved Americans continued
to rise throughout the 1820s and
1830s, even after importation of for-
eign slaves ended in 1808. By 1860,
the census counted nearly four mil-
lion slaves in America, and it was clear
that the institution of slavery had be-
out against the evils of slavery. In addi-
tion, many observers predicted that as
Southern states diversified their
economies in the coming years
(adding industries other than cotton
to the mix), their reliance on slave
labor would diminish. Finally, anti-
slavery forces took comfort in the
South’s agreement to suspend importa-
tion of African slaves in 1808. They
viewed this agreement as a sign that
even the South saw that its depen-
dence on slavery could not last forever.
“King Cotton”
In 1793, however, a Yankee
(Northerner) named Eli Whitney
(1765–1825) unveiled a new invention
that took the world by storm. The in-
vention, a simple machine called the
cotton gin, revolutionized the cotton-
growing industry. Before the introduc-
tion of Whitney’s cotton gin, processing
or cleaning of cotton crops (separating
the seeds from the cotton fiber that was
used to make clothing and other goods)
was a tedious, time-consuming task.
Mindful of cotton’s production difficul-
ties, most Southern farmers grew other
crops, even though the soil and climate
in the American South was ideal for cot-
ton production. But textile mills in Eu-
rope and Northern states were making
loud demands for the crop.
With the arrival of the cotton
gin, which effectively separated seeds
from cotton fibers, plantation owners
(known as planters) could suddenly
process far greater quantities of the
valuable crop than ever before. All
across the South, small farms and
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