Many progressive supporters of immigration restrictions justified their views by appealing to , a field that involved grading ethnic groups according to their alleged genetic qualities.

Eugenics

Explanation:

Eugenics is the belief that the human race should be improved genetically by selective interbreeding. It is a belief that is closely related to racism because eugenics tend to equate "races" with desirable or undesirable genetic characteristics.

Eugenics was very popular at the end of the nineteenth century, and at the turn of the twentieth century, even among the progressives. Many of them supported the acts that restricted immigration to Northern European Countries.

answer: there were new carvings etched into the back of the sculpture and each shoulder was turned into a symbol of the birdman.

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.