1805 Lewis amd Clark passed through the Idaho region on their way to the Pacific coast.

1809 David Thompson built the first fur-trading post in Idaho.

1834 Fort Boise and Fort Hall were established.

1836 Presbyterian missionaries Henry H. Spalding and his wife established the Lapwai Mission Station, near present-day Lewiston, making them the first white settlers in Idaho.

1855 Mormons built Idaho's first irrigation projects.

1860 The first permanent settlement, Franklin, was founded by Mormons. Gold was discovered on Orofino Creek.

1862 Gold was discovered in the Boise Basin.

March 4, 1863 Congress established the Idaho Territory.

1877 U.S. troops defeated the Nez Percé.

July 3, 1890 Idaho became the 43rd state.

1892 and 1899 Violence broke out between union miners and mine owners.

1905 Former Governor Frank Steunenberg was murdered. The 1907 trial of the men accused of killing him attracted international attention.

1951 Electricity was generated from nuclear energy for the first time in the world at a laboratory near Idaho Falls.

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This page was last updated on November 29, 2017.