1983Harold Washington was elected as Chicago’s first African-American mayor. Washington, a graduate of Northwestern University School of Law, served in the Illinois Senate and House of Representatives before being elected to the U.S. House of Representatives. He served four years as Chicago’s mayor until his death in 1987.1992The Great Chicago Flood occurred when a utility tunnel beneath the Chicago River ruptured, flooding basements and underground facilities, causing more than $1.95 billion in damages …