1. On April 11, 1968, President Lyndon B. Johnson signed the Civil Rights Act of 1968, also known as the Fair Housing Act, into law. This landmark legislation prohibited discrimination in housing based on race, color, religion, or national origin.

2. The Tacoma Narrows Bridge, a suspension bridge that connected Tacoma to the Kitsap Peninsula in Washington, collapsed on April 11, 1940. The bridge had been nicknamed "Galloping Gertie" due to its tendency to sway in high winds, and its collapse became a famous engineering failure.

3. On April 11, 1976, the Space Needle in Seattle held a "Space Day" celebration in honor of the launch of the first space shuttle, Columbia. The celebration included astronaut appearances, science exhibits, and a "space pancake breakfast."

4. The city of Redmond, Washington celebrated its 100th birthday on April 11, 2012. The city was founded in 1912 as a logging town, and is now known as a hub for the technology industry, with companies such as Microsoft and Nintendo of America headquartered there.

5. On April 11, 1987, Washington State University defeated UCLA 20-14 in the first-ever live college football game broadcast in China. The game was played at the Beijing Workers' Stadium and broadcast on Chinese state television, marking a historic moment in the growing cultural exchange between the United States and China.