In what area did airplanes first prove to be of practical value?
a.) stunt shows
b.) mail delivery
c.) the tourism industry
d.) military operations

What person was influential and trying to ease race relations in america during the early part of the twentieth century

By the end of the 1800s, there was a change in the nature of the immigrants coming to the united states. immigration from northern europe—england, ireland, germany, and scandinavia—declined, while immigration from italy, russia, and austria-hungary grew. in fact, between 1900 and 1910, more than three-fourths of all immigrants came from these three countries. unfortunately, these countries were far removed england, the home of our founders, and the immigrants who came from them had a hard time adjusting to life in their new country.

Which aspect of the postwar era did jazz’s liveliness, looseness, and improvisation most reflect?