The Emergence of modern America
The 20th century
el-trains and subways
Trains were invented to allow transportation of stuff or people from one place to another.
Subways were also used for easy transportation from one place to another
People thought it would be safe and better to use a train to transport different types of supplies that are needed for the other place
entertainment in the 20th century
They also created radios, where people could tune in and listen to the news and hear the latest music.
Movies were created too like the 20th century fox and other movie lines.