President Harry S. Truman announces the Truman Doctrine, committing the United States to support free nations resisting communist expansion during the early Cold War.

Coca-Cola is bottled for the first time in Vicksburg, Mississippi, helping transform the drink from a soda fountain beverage into a global consumer product.

Byzantine general Belisarius successfully breaks the Ostrogothic siege of Rome during the Gothic War, securing a strategic victory for the Eastern Roman Empire.