Differences in regional economic development during the 19th century produced which of these conditions in the united states at the time of the civil war?
the north was the nation's main industrial area.
the south was the main destination for immigrants.
the north was the nation's main cotton-producing area.
the south was the nation's m ain transportation center for agricultural goods.

Explanation:

The American economy was caught in transition on the eve of the Civil War. What had been an absolutely rural economy in 1800 was in the first phases of an industrial revolution which would result in the United States getting to be one of the world's leading industrial powers by 1900.

However, the beginnings of the industrial revolution in the prewar years was solely constrained to the locales north of the Mason-Dixon line, leaving a significant part of the South far behind.

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sharecropper (you may punch em in the face if im wrong lol)