Walt Disney World Resort officially opened in Florida.
The star guest of the grand opening was William, Windsor Junior.
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Edgar the Peaceful, noted for his peacekeeping, became King of England.
Claudia Sheinbaum was sworn in as Mexico's first female president.
The United States Congress established Yosemite National Park.
Bernie Sanders suffered a heart attack.
Newark Liberty International Airport opened, becoming the first airport in the New York City metropolitan area.