#1 On July 4, all three Founding Father presidents—John Adams, Thomas Jefferson, and James Monroe—perished.In the same year, 1826,


#2 The full name of the Barbie doll is Barbara Millicent Roberts, and she was born in Willows, Wisconsin.Her first appearance at the New York Toy Fair was on March 9, 1959, her birthday.


#3 He was born in 1790, and one of President John Tyler's grandsons is still alive today.How could this be?When his son Lyon Tyler was born in 1853, 10th President Tyler was 63 years old;When Lyon was 75, his son was born.Harrison Tyler, President Tyler's living grandson, is 93 years old.In 2020, Lyon's other son, Lyon Jr., died at the age of 95


#4 American giant Robert Wadlow (1918–1940), who measured 8 feet 11 inches, was the tallest person ever recorded.Wadlow had an abnormally large pituitary gland, which was the cause of his size.


#5 Sultan Kosen, a 39-year-old Turkish man who holds the record at 8 feet, 2.8 inches, is the tallest living person. He set the record in 2009.A problem with his pituitary gland is also behind his growth.


#6 Jeanne Louise Calment, a Frenchwoman, was the oldest living person whose age could be verified. She died in 1997 at the age of 122.