1919

Zion National Park is created.

1920

19th Amendment ratified to the U.S. Constitution securing Utah women's full voting rights.

1922

KSL, Salt Lake City's first radio station commences broadcast.

1923

Hovenweep made a National Monument.

Bryce Canyon made a National Monument.

1927

Philo T. Farnsworth invents fully electronic television.

1928

Bryce Canyon National Park is established.

1929

Stock market crashes, sending the nation into the Great Depression, which hits Utah hard and initiates the state's heavy reliance of federal aid.

Arches recognized as a National Monument (becomes a National Park in 1978).

1933

Cedar Breaks recognized as a National Monument.

1936

Reva Beck Bosone becomes the first woman judge in Utah.

1937

Capitol Reef recognized as National Monument (becomes a National Park in 1971).

1938

First chairlift opens at Alta, constructed from mining hoist parts and financed by Salt Lake businessmen.

1942-1945

Topaz (Japanese-American Relocation Camp) operates near Delta.

1943

Geneva steel plant begins operation in Utah County.