Simplify the following text for a Grade 5 native English-speaking person.
Original: By the time of the Civil War , Carbondale had become both a regional center for business and transportation , and an educational center with the founding of Carbondale College ( which became Southern Illinois College in 1869 ) . Carbondale won the bid for the new teacher training school for the region , and Southern Illinois Normal University opened in 1874 .
Simplified: Carbondale is a city of Illinois in the United States .