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These projects both affect the U.S. economy.

Both Mount Rushmore and Hoover Dam were finished during Franklin Roosevelt presidency.

The Mount Rushmore National Memorial is a monumental sculpture set carved between 1927 and 1941 on a granite mountain in Keystone, South Dakota, featuring the 18-meter-tall faces of American presidents George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln. They were sculpted by the Danish-American sculptor Gutzon Borglum and his son, Lincoln Borglum. This monument commemorates the birth, growth, preservation and development of the American nation.

The Hoover Dam is an arc-gravity concrete dam, located in the course of the Colorado River, on the border between the states of Arizona and Nevada. It is located 48 km southeast of Las Vegas. It was built during the time of the Great Depression, between 1931 and 1936.