What was the campaign promise by warren g. harding during the election of 1920, echoing many peoples' desire to get back to a simpler way of life following world war i?

The campaign promise by Warren G.Harding during the Election of 1920, echoing many peoples' desire to get back to a simpler way of life following World War I was:

Explanation:

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

it refers to race, i am pretty sure this was a popular term in nazi germany or something.