1. In 1818, Illinois became the 21st state to join the United States, making November 20th Illinois' statehood day. This event marked a significant moment in the history of Illinois and its people, as it secured Illinois' position as a part of the union.

2. On November 20, 1910, the first commercial flight in the United States occurred in the skies over suburban Chicago. A pilot named Philip Parmalee flew a Wright Model B biplane from one end of Cicero racetrack to the other in under six minutes, ushering in a new era of aviation innovation and progress.

3. In 1990, Richard M. Daley was elected Mayor of Chicago, beginning a 22-year tenure as the city's leader. Daley presided over a period of growth and development in Chicago, overseeing numerous infrastructure projects, social programs, and reforms that helped modernize and revitalize the city.

4. November 20, 1998, marked the opening of the Illinois Holocaust Museum and Education Center in Skokie, Illinois. The museum commemorates the Holocaust and strives to promote greater awareness and understanding of the atrocities committed during World War II, as well as their ongoing impact on the world today.

5. In 2004, the Chicago White Sox won their first World Series championship in 88 years, defeating the Houston Astros in four games. The victory was a historic moment for the city and the team and brought joy to baseball fans across the region. The team's memorable season and postseason run will forever be remembered by fans and baseball enthusiasts alike.