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This Day in American History

May 10

1 historic event on this date

Historical1869

Transcontinental Railroad Completed

The Central Pacific and Union Pacific railroads met at Promontory Summit, Utah, completing the first transcontinental railroad. A golden spike was driven to mark the connection that linked the Atlantic and Pacific coasts by rail.

Why It Matters

The transcontinental railroad unified the nation physically and economically, demonstrating the power of federal investment in infrastructure to connect citizens and strengthen the republic.

Explore the Principles Behind the History

Every event in American history connects to the founding principles. Discover the ideas that shaped these moments.

View the 28 Founding Principles