# Travel >> Destinations >> Central America

East vs. West USA: 5 Key Differences in Geography, Climate, Economy & Culture

The Mississippi River roughly divides two Americas. Here's how they differ.

Geography

West	East
Cordillera: Rockies, Sierra Nevada, Cascades, Basin & Range	Appalachians (eroded), Piedmont, Coastal Plain, Great Plains (western edge)
High relief, tectonically active	Lower relief, stable craton
Arid interior basins (Death Valley, Great Basin)	Humid river valleys (Ohio, Tennessee, Hudson)

Climate

West: Mediterranean (CA coast), alpine, desert, semi-arid steppe. Extreme spatial variability.
East: Humid subtropical (SE), humid continental (NE/MW). Four distinct seasons; reliable precipitation.

Population Density

West: 29/km² avg. WY (2.3), MT (2.9), ID (9). Coastal clusters (LA, Bay Area, Seattle).
East: 115/km² avg. NJ (495), RI (401), MA (345). Megalopolis (Bos-Wash) = 50M on 2% land.

Economy

West	East
Tech (Silicon Valley, Seattle, Austin)	Finance (NYC), biopharma (Boston), advanced mfg
Aerospace/defense (CO, AZ, CA)	Logistics/ports (NY/NJ, Savannah, Hampton Roads)
Resource extraction (mining, oil, timber)	Insurance (Hartford), higher ed, healthcare systems
Tourism (parks, skiing, entertainment)	Government (DC), professional services

Culture

West: Frontier individualism, Hispanic/Indigenous/Asian layers, outdoor recreation identity, newer built environment.
East: Historical layering (colonial, industrial, immigrant waves), dense institutional networks, distinct regional subcultures (New England, Mid-Atlantic, South, Midwest).

Both are diverse. The West's diversity is more recent/immigration-driven; the East's is deeper/historical. Water scarcity defines Western politics; density defines Eastern.

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Central America