I dont think there can be 1 single answer to this question: Unfortunatly both Stalin & Hitler would have a claim. As would Churchill & FDR. We can not forget Mahatma Gandhi while considering man of importance during 20th century.
Albert Einstein was voted the most important person of the 20th century by Time magazine with Mohandas Ghandi and Franklin D. Roosevelt as runners up.
Considered the most important orthopedic development in the twentieth century, arthroscopic surgery is widely used.
spinning wheel
Nadia Boulanger was one of the most influential music professors of the 20th century.
William Faulkner
Lyndon Johnson signed the most important civil rights act of the 20th century.
It is not possible to call anybody the most important of the century antil that century is over or almost over. So, although most experts could foresee that nobody was going to match Picasso, yet they could not be certain until the end of the 20th century.
Guernica
Most of the 20th century.
20th century by far.
The 20th. Century
Coco Chanel was a pioneering French fashion designer whose modernistphilosophy, menswear-inspired fashions, and pursuit of expensive simplicitymade her an important figure in 20th-century fashion. Her influence on hatecouture was such that she was the only person in the field to be named onTIME Magazine's 100 most influential people of the 20th century.