answers: Fort Dearborn
context: flag into law on September 17, 1969, and the new flag was designed by Mrs. Sanford Hutchinson and became the official flag on July 1, 1970. For Illinois's first 100 years of statehood in 1918, Wallace Rice, who designed Chicago's flag, designed a centennial flag for the state. It had three horizontal bands of equal width alternating white, blue, white. It was charged with 21 stars along the edge of the hoist. There were 10 blue stars in the upper white band and 10 in the lower white band, representing the 10 northern and 10 southern states at the time </s> 1917. From left to right: Additional stars have been proposed, with varying degrees of seriousness. The following reasons have been suggested for possible additions of a fifth star: In 1915, Mayor William Hale Thompson appointed a municipal flag commission, chaired by Alderman James A. Kearnes. Among the commission members were wealthy industrialist Charles Deering and impressionist painter Lawton S. Parker. Parker asked lecturer and poet Wallace Rice to develop the rules for an open public competition for the best flag design. Over a thousand entries were received. In the end, the commission chose the design by Wallace Rice himself. On </s> The city was rated by Moody's as having the most balanced economy in the United States due to its high level of diversification. Four historical events are commemorated by the four red stars on Chicago's flag: The United States' Fort Dearborn, established at the mouth of the Chicago River in 1803; the Great Chicago Fire of 1871, which destroyed much of the city; the World Columbian Exposition of 1893, by which Chicago celebrated its recovery from the fire; and the Century of Progress World's Fair of 1933–1934, which celebrated the city's centennial. The flag's two blue stripes symbolize the north
question: what do the stars on the chicago flag represent