World History
270 – Traditional Date of St. Valentine’s Execution
Why it matters: Inspired the modern global celebration of Valentine’s Day.
1876 – Alexander Graham Bell Applies for Telephone Patent
Why it matters: Launched the communications revolution that shaped the modern world.
1946 – University of Pennsylvania Unveils ENIAC Computer
Why it matters: One of the first general-purpose electronic computers, marking the dawn of the digital age.
U.S. History
1912 – Arizona Becomes the 48th State
Why it matters: Completed the continental United States.
1929 – St. Valentine’s Day Massacre in Chicago
Why it matters: Became a defining episode of Prohibition-era organized crime.