Robert Wadlow was the tallest person in the modern recorded history. According to World Guinness Record reports, Robert Wadlow was the tallest most lengthy person in the modern world.
Height of Robert Wadlow
The height of world tallest person was 8 feets and 11 inches. He was American who lived for 22 years from 1918 to 1940.
John Rogan Tallest Man
Before the Robert Wadlow, John Rogan was the tallest person. His height was 8 feet and 9 inches. But in 1939, Robert Wadlow got the attention of media when he get the height of 8 feet and 11 inches.