Which of the following cities had the lowest population density in the 1800s? new york city little rock boston

Arguably one of the most important inventions of the 20th century was a) the transistor. b) air conditioning. c) the vacuum cleaner. d) radio broadcasting.

The irish and germans of the 1840's were part of the new immigration. true or false

How many senators are there from each state? a. two c. one b. three d. the number depends on the state’s population