Chicago is the county seat of Cook County, the second most populous county in the U.S., while a small portion of the city's O'Hare International Airport also extends into DuPage County.. 
Tẹ́lẹ̀ ó jẹ́ àpapọ̀ ọ̀rọ̀ ìdájọ́ ilẹ̀ Nàìjíríà.Ìtọ́kasíàwọn olóṣèlú ará Nàìjíríà.. 