World War I, also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.
The Battle of the Somme, also known as the Somme Offensive, was a battle of the First World War fought by the armies of the British and French empires against the German Empire.
The treaty of Versailles was effective on 10th January 1920. the location of the treaty of versailles was in Paris France. it ended world war 1.
In 1919, a national assembly convened in Weimar, where a new constitution for the German Reich was written, then adopted on 11 August of that same year. Beginning of a new constitution post ww1
The Roaring Twenties was the period of Western society and Western culture that occurred during and around the 1920s
The Great Depression was a severe worldwide economic depression that took place mostly during the 1930s, originating in the United States.
The Holocaust, also referred to as the Shoah, was a genocide during World War II in which Adolf Hitler's Nazi Germany, aided by its collaborators, systematically murdered some six million European Jews.
World War II (1939–1945) In Fascist Italy and Nazi Germany, both Mussolini and Hitler pursued territorial expansionist and interventionist foreign policy agendas from the 1930s through the 1940s culminating in World War II.
World War II, also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier
The Invasion of Poland, known in Poland as the September Campaign or the 1939 Defensive War, and in Germany as the Poland Campaign or Fall Weiss, was a joint invasion of Poland by Germany.