Period 4: 1800-1848

Key Concepts

Key Concept 4.1 — The United States began to develop a modern democracy and celebrated a new national culture, while Americans sought to define the nation’s democratic ideals and change their society and institutions to match them.

Key Concept 4.2 — Innovations in technology, agriculture, and commerce powerfully accelerated the American economy, precipitating profound changes to U.S. society and to national and regional identities.

Key Concept 4.3 — The U.S. interest in increasing foreign trade and expanding its national borders shaped the nation’s foreign policy and spurred government and private initiatives.

Primary Sources

Study Resources