What was the cause of the economic geography change in the U.S. during the nineteenth century?(1 point)

Responses

the demand for more cotton
the demand for more cotton

the increased population
the increased population

the expansion of the railroads
the expansion of the railroads

the end of the Civil War

the end of the Civil War

The cause of the economic geography change in the U.S. during the nineteenth century was the demand for more cotton, the increased population, the expansion of the railroads, and the end of the Civil War.