H.4.8.2

Analyze the development of regional tensions prior to the Civil War:<ul><li>Economic development: (e.g., effects of cotton gin invention, Industrial Revolution, growth of manufacturing and railroads in northern states)</li><li>Political actions: (e.g., tariffs, nullification crisis, compromises, disenfranchisement of free blacks)</li><li>Expansion of slavery, immigration, and westward migration</li></ul>