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The Russian Revolution of 1917 overthrew the Tsarist regime and brought the Bolsheviks, led by Lenin, to power, establishing the world's first socialist state. -
It was the most devastating war in human history to date, a conflict that was to be the prelude to another, years later, that would have even more terrible consequences. -
Was a peace treaty signed in the Hall of Mirrors of the Palace of Versailles in France at the end of World War I by more than fifty countries. -
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This treaty between Germany and the Soviet Union, signed in 1922, allowed both countries to circumvent the restrictions of the Treaty of Versailles and to cooperate militarily and economically. -
In October 1929, the New York Stock Exchange collapsed, triggering a global economic crisis known as the Great Depression. -
On 29 October 1929, investors on the New York Stock Exchange panicked and dumped more than 16 million shares, causing financial chaos and a plunge in the value of the shares of the country's most important companies. -
The Second Spanish Republic was the democratic regime that existed in Spain between 14 April 1931. -
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The retreat of the Chinese Red Army led by Mao Zedong from Jiangxi to Shaanxi to escape Kuomintang harassment during the Chinese civil war. -
The Spanish Civil War was an armed conflict that pitted Republican forces against Franco's forces, led by General Francisco Franco. This war left deep scars on Spanish history and society, the consequences of which are still felt today. -
A meeting between Germany, Italy, France and the United Kingdom, at which Germany was allowed to annex the Sudetenland, a German-speaking region of Czechoslovakia, as part of the policy of appeasement. -
The joint invasion of Poland by Germany and the Soviet Union in September 1939, marking the beginning of World War II. -
Germany invaded Poland on 1 September 1939 and thus began World War II. In response, Britain and France declared war on Germany. German forces invaded Western Europe in the spring of 1940. -
During World War II, the Nazi regime carried out the systematic genocide of six million Jews, as well as other ethnic groups and minorities, in what is known as the Holocaust. -
9 August 1945 The United States drops an atomic bomb on Nagasaki. 2 September 1945 Having agreed in principle to unconditional surrender on 14 August 1945, Japan formally surrenders and World War II ends.