Can I see a picture of the chart or type it in the comments
13 years. It lasted from 1920 to 1933.
It would be cooler underground
Answer:
Other languages weren't created, they just exist, nobody really made them, unless your Christian, then the explanation for different languages would be the tower to heaven. And all languages were made for the same reason, to communicate with each other.
Better transportation affected the growth and urbanization of cities by allowing more people to travel, which in turn led to more people settling down in these cities to start a new life.
Better communication affected the growth and urbanization of cities by allowing people to understand each other better, which led to more people coming to these cities and socializing, which improved economy. People who can communicate can perform business better and communicate outside of the city, drawing more people there.