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Events on Monday 10 May 1869 1
1869Completion of the First Transcontinental RailroadGolden Spike driven at Promontory Summit, UtahThe Central Pacific and Union Pacific railroads were joined at Promontory Summit in Utah Territory, completing the first railroad line across North America. A ceremonial golden spike marked the occasion, cutting cross-country travel time from months to about a week. The link transformed trade, migration, and settlement across the American West.