What was the most technological change during the market revolution?

Americans integrated the technologies of the Industrial Revolution into a new commercial economy. Steam power, the technology that moved steamboats and railroads, fueled the rise of American industry by powering mills and sparking new national transportation networks. A “market revolution” remade the nation.

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The battle led to the Gettysburg Address in which Lincoln redefined the Civil War as a struggle for freedom and democracy. Land preservation efforts began immediately after the Battle of Gettysburg and resulted in a national cemetery, consecrated by Lincoln on November 19, 1863

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