The new republic struggled to define and extend democratic ideals in the face of rapid economic, territorial, and demographic changes.
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.
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