Pope Leo X issues the “Decet Romanum Pontificem,” also called the Bull of Excommunication, against the German reformer Martin Luther as well as his followers.


The German philologist Konrad Duden is born. He paved the way for standardized German spelling. He developed the complete orthographic dictionary of the German language, the “Duden.


The German writer Alexander Spoerl is born.


The Second Hague Conference to settle German reparations for World War I begins. The Young Plan is adopted there.