The main change is the countries the immigrants were coming from. The immigrants in 1840s were coming from the Western Europe mainly Ireland and Germany. Immigrants from Asia and Eastern Europe were coming a bit later while during the beginning of the 20th century most of the immigrants came from Italy.
The one that best describes the actions of the student nonviolent
coordinating committee was : they used nonviolent resistance effectively
and organized freedom rides in the south.
Their movement was
influenced by Martin Luther King which also led the same type of
movement, and it's managed to bring progression to our society.
From what I know, the Mongols we're known for not making huge changes in the lives of their subjects. This is what allowed the Mongolian empire to grow so large. I hope this helps
