The first U.S. transcontinental railroad joined at Promontory Summit.

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The original Golden Spike used to connect the Union Pacific and Central Pacific railways in 1869 near Ogden, Utah.  This spike was driven in by Leland Stanford and is on display at the Cantor Arts Museum at Stanford University.
History

1869

The first U.S. transcontinental railroad joined at Promontory Summit.

The Central Pacific and Union Pacific railroads joined at Promontory Summit in Utah Territory on 10 May 1869. The golden spike ceremony marked the completion of the first United States transcontinental railroad connection.

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2,500

Cleopatra lived closer in time to the Moon landing than to the building of the Great Pyramid.

Cleopatra lived closer to the 1969 Moon landing than to the construction of the Great Pyramid. The pyramid was already about 2,500 years old when she was born.

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Woolly mammoths were still alive when the Great Pyramid was built.

A surviving population of woolly mammoths lived on Wrangel Island while Egyptians were building the Great Pyramid. These Arctic animals persisted until about 4,000 years ago, long after most mainland populations disappeared.

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