Historical Events on December 12

18 significant historical events occurred on December 12. December 12 has seen various historical events across centuries and continents. On this date in 1936, the Xi'an Incident involved a mutiny in the Chinese army. In 1939, Finland achieved its first major offensive victory at the Battle of Tolvajärvi during the Winter War. In 2015, the Paris Agreement on climate change was signed. This date has also been marked by tragedy, such as the 1969 Piazza Fontana bombing in Milan, and significant political events like the 2019 United Kingdom general election.