Mt. Rushmore + John O'Sullivan = MANIFEST DESTINY

Mount Rushmore and John O'Sullivan are linked together by Manifest Destiny. John O'Sullivan was the creator of the idea of Manifest Destiny, while Mt. Rushmore was a tribute to Manifest Destiny itself, with the presidents that were carved into it being people who contributed greatly to the expansion of our nation. This is how Mt. Rushmore and John O'Sullivan are linked together.