Wilhelm II -
Wilhelm II became Emperor (Kaiser) of Germany in 1888. He led the 2nd Reich of Germany. The Abdicated on the 9th November 1918, 2 days after Germany surrenders in WW2, 30 Years after his crowning

Treaty of Versailles -
The Treaty of Versailles was one of 5 treaties signed after World War I, but was regarding the German Empire and its Subjects, for example, Poland was given independence where it had been established as a German Puppet State in 1916, and it would be given Large amounts of Prussian Territory

The Ruhr, and Hyperinflation.
In 1923 the Wiemar Republic (Germany) stopped paying War Reperations, due to economic strains on Germany. In response to this, about 10,000 French and Belgian troops entered Germany, and occupied the Ruhr. President Ebert then promised to pay the German Workers to go on strike. The Occupation took up to 2 years to get rid of the occupation, by then the German Government had printed so much money it had become worthless