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Exploration Expansion

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US National Science Foundation Arctic Research Program development and funding cycles (1980–present)

1984 - 2025

US Immigration and Nationality Act (Hart-Celler) and its effects on postwar migration (1965–1980)

1964 - 1980

Upper Paleolithic technocomplexes (Aurignacian, Gravettian) and Homo sapiens dispersal in Europe (c. 45–20 ka)

44000 BCE - 21000 BCE

United States Interstate Highway System construction (1956–1992)

1956 - 1992

United States Exploring Expedition (Wilkes Expedition) Pacific Botanical Collections (1838–1842)

1836 - 1857

United States Exploring Expedition (Wilkes Expedition) natural history program (1838–1842)

1836 - 1857

United States colonial administration in the Philippines (1898-1946)

1898 - 1946

United States Antarctic Research Program geological expeditions to Marie Byrd Land (1959–1972)

1959 - 1972

United Launch Alliance Atlas V operations and transition to Vulcan (2006–2023)

2006 - 2024

United Fruit Company expansion and banana extraction in Central America (1899-1930)

1884 - 1930

Unilever's Global Expansion and Diversification (1890-2000)

1886 - 2000

Undersea cable warfare, interception, and sabotage in WWI and WWII (1914–1945)

1911 - 1945

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