Ohio, state, United States

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Ohio, midwestern state in the Great Lakes region of the United States. It is bordered by Pennsylvania (NE), West Virginia (SE) and Kentucky (S) across the Ohio River, Indiana (W), and Michigan and Lake Erie (N).

Sections in this article:

• Introduction
• Twentieth-Century Developments
• The Civil War, Industrialization, and Politics
• The War of 1812 and Further Settlement
• From the Settlement of the Old Northwest to Statehood
• Prehistory to the American Revolution
• Government, Politics, and Higher Education
• Economy
• Geography
• Facts and Figures
• Bibliography

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2025, Columbia University Press. All rights reserved.

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