Region Bounded by Ohio & Mississippi Rivers, Appalachians, Gulf, and Florida

This describes the Eastern United States (broadly) or more precisely the Gulf Coastal Plain + Interior Low Plateaus + Appalachian Plateau physiographic provinces.

Boundary Breakdown

• North: Ohio River (Pittsburgh → Cairo, IL)
• West: Mississippi River (Cairo → Gulf)
• South: Gulf of Mexico coast
• East: Appalachian Mountains (northeast) + Florida peninsula (southeast)

States Fully/Partially Within

Kentucky, Tennessee, Alabama, Mississippi, Louisiana, Arkansas, Missouri (bootheel), Illinois (southern), Indiana (southern), Ohio (southern), West Virginia, Virginia (southwest), Georgia, Florida, South Carolina, North Carolina.

Key Subregions

• Deep South: Cotton belt, Black Belt, civil rights history.
• Appalachia: Coal, distinct culture, biodiversity hotspot.
• Mississippi Delta: Alluvial plain, blues origin, agriculture.
• Gulf Coast: Ports, petrochemical, tourism, hurricane vulnerability.
• Florida: Peninsula, carbonate platform, Everglades, tourism engine.

Historical Significance

This river-mountain-gulf frame shaped Native American trade networks, European colonization (French Mississippi, Spanish Florida, British Atlantic), slavery-based plantation economy, Civil War theaters, and modern Sun Belt growth.