On this day, April 4th, 1923 🎬, four brothers from Ohio — Harry, Albert, Sam, and Jack Warner — formally incorporated Warner Bros. Pictures in Burbank, California. What started as a scrappy film distribution company would go on to give the world The Jazz Singer (the first talking picture), Casablanca, The Wizard of Oz, Batman, Harry Potter, and countless other cultural landmarks 🎥. The brothers famously bet everything on sound technology when rivals laughed them off — and that gamble didn’t just save their studio, it changed the entire movie industry forever 🌟.

Other interesting facts that happened on this day:

• 1983: Space Shuttle Challenger made its maiden voyage on mission STS-6
• 1828: Dutch chemist Casparus van Houten patented the process for making cocoa powder
• 1870: Golden Gate Park in San Francisco was officially established by city order
• 1460: The University of Basel, one of the oldest universities in the world, was founded in Switzerland
• 1949: NATO was founded by 12 nations, creating the most powerful military alliance in history