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  2. Conservation movement - Wikipedia

    en.wikipedia.org/wiki/Conservation_movement

    Both conservationists and preservationists appeared in political debates during the Progressive Era (the 1890s–early 1920s). There were three main positions. There were three main positions. Laissez-faire: The laissez-faire position held that owners of private property, including lumber and mining companies, should be allowed to do anything ...

  3. Environmental history of the United States - Wikipedia

    en.wikipedia.org/wiki/Environmental_history_of...

    By the early 20th century, the federal government held significant portions of most western states that had simply not been claimed for any use. Conservationists prevailed upon President Theodore Roosevelt to set aside lands for forest conservation and for special scientific or natural history interest. Much land still remained unclaimed even ...

  4. Timeline of history of environmentalism - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_history_of...

    9.2 1920s. 9.3 1930s. 9.4 ... Printable version; In other projects ... This timeline of the history of environmentalism is a listing of events that have shaped ...

  5. List of years in the environment - Wikipedia

    en.wikipedia.org/wiki/List_of_years_in_the...

    1.1 1920s. 1.2 1940s. 1.3 1950s. 1.4 1960s. 1.5 1970s. ... Printable version; In other projects Wikidata item; ... Timeline of the history of environmentalism

  6. Conservation in the United States - Wikipedia

    en.wikipedia.org/wiki/Conservation_in_the_United...

    John Muir was one of the founding fathers of the preservation movement in the United States in the late 19th century. He believed that nature had intrinsic value and viewed nature as a sacred religious temple, which opposed the view of many utilitarian conservationists. One of Muir’s first endeavors was helping create Yosemite National Park.

  7. Category:American conservationists - Wikipedia

    en.wikipedia.org/wiki/Category:American...

    Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; ... Environmentalists: Conservationists. Subcategories. This category has only ...

  8. Timeline of the history of the United States (1900–1929)

    en.wikipedia.org/wiki/Timeline_of_the_history_of...

    1917–1920 – First Red Scare, marked by a widespread fear of Bolshevism and anarchism; 1918 – President Wilson's Fourteen Points, which assures citizens that the Great War was being fought for a moral cause and postwar peace in Europe; 1918 – Republicans win back Congress in the Midterm elections. 1918 – Armistice agreement ends World ...

  9. Category:1920s in the environment - Wikipedia

    en.wikipedia.org/wiki/Category:1920s_in_the...

    1920s portal; These articles relate to the natural environment in the decade 1920s. They include the human impact on the environment, environmental law, conservation, environmentalism and environmental issues.