The first US commercial bank, The Bank of North America, opened in Philadelphia.
Source
Galileo discovered the first three satellites of Jupiter.
The first telephone call was made across the Atlantic – from London to New York.
President Truman announced to the people of America that they successfully developed a hydrogen bomb.
French forces attacked Calais and took it back from English rule.
The iconic Leaning Tower of Pisa leaned 'too far,' which resulted in its closure.
