A little bit confused on the question, seeing how there are no answers handed to us, however, I am assuming that the answer is wear gloves and have no loose articles of clothing, and no open-toed shoes (such as sandals)
Definitely not. Mount Rushmore is granite so it erodes roughly 1 inch every 10,000 years. In 500,000 years it is predicted that the face would lose some of their definition, but Mount Rushmore could last for 7 MILLION years
World War ll i believe because it hid the soldiers