Period 4: 1800-1848 (5 ene 1800 año – 1 ene 1848 año)

Descripción:

A period of US expansion and internal threats to stability.

Main concepts:
- Evolution of political parties
- Westward expansion
- Growing sectionalism and tensions over the expansion of slavery
- Growth of the abolitionist and women’s rights movements
- Industrial Revolution and the growth of railroads

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