In this interactive from A Biography of America, decide whether Presidents Roosevelt and Wilson should have been more active in preserving wilderness from development. In 1908, when a dam-building project designed to provide water to the city of San Francisco threatened to flood the spectacular Hetch Hetchy Valley near Yosemite National Park, President Theodore Roosevelt sided against wilderness advocates, such as Sierra Club founder John Muir, and with supporters of the dam. When Woodrow Wilson became President, he announced he would sign the bill that authorized the Hetch Hetchy Dam.
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