This edition is dedicated to the 20th century. It was a time when the US was hit by a "great depression..." When the Nazi threat matured under the rubble of the Mad Years... When, thanks to the global crisis, fascist dictatorships conquered Europe... When the Stalinist USSR and Maoist China threw all their strength into renewal... When World War II broke out with its horrors and heroism... When Europe was gradually reborn, and the largest powers conducted a "redistribution of the world"...