Though the US preached isolationism at first, the country would enter WWI and certainly take an important role on the world stage. How did the US involvement in the conflict lead to major change either domestically or globally for the US? What, if any connections do you to see the the 1920s cultural shifts?

Though the US preached isolationism at first, the country would enter WWI and certainly take an important role on the world stage. How did the US involvement in the conflict lead to major change either domestically or globally for the US? What, if any connections do you to see the the 1920s cultural shifts?