Nobody "invented" the twentieth century. It is simply the time period from 1900-1999.
The Man Who Invented the Twentieth Century was created in 1999.
Twentieth
Alexander graham bell
The joystick was invented in the first decade of the twentieth century. Its original use was as one of the controls of an aircraft.
On the Twentieth Century was created in 1978.
No, it is mid to late twentieth century
The Gondola lift was invented in the twentieth century. It is one of the commonly used lifts in many countries across the world.
The airplane was not invented in 1917. it was invented in the first few years of the twentieth century by the Wright Brothers and the first flight was on December 7th, 1907.
The Twentieth Century Approaches was created in 1986.
The ISBN of The Unfinished Twentieth Century is 9781859847800.
The Myth of the Twentieth Century was created in 1930.
Twentieth Century - typeface - was created in 1937.