For long distance travel, most people of the early 1900's used trains, but for shorter distances, horses and buggys were more common, along with an occasional car.
Primarily by foot and horse. Horses pulled wagons. The railroads were used for long distance travel, as were ships. There were a very few automobiles.
1900 divided by 80 is the sum you need.
No because they couldn't travel in the 1900s
In the early 1900's most Americans travelled by horse, train, or boat. They tended to stay home, although they might make a long distance travel on a train, or boat. In the time before cars, and planes, Americans tended to stay within a short distance of their homes.