The point at which a child becomes an adolescent is defined by the onset of puberty or by the beginning of the teenage stage. Adolescence is also viewed as ending with the teenage stage. However, in some individuals (particularly females), puberty begins in the preadolescence years.
Grundy County, Illinois. Grundy County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 50,063. Its county seat is Morris. Grundy County is part of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area.
Sullivan, Illinois. Sullivan is a city in Moultrie County, Illinois, United States. The population was 4,326 at the 2000 census, and 4,396 in 2009. It is the county seat of Moultrie County. Sullivan is named after Sullivan's Island, South Carolina, where Fort Moultrie is located.