maailmansotien
Maailmansotien refers to the global conflicts that took place in the first half of the 20th century. These were the First World War (1914-1918) and the Second World War (1939-1945). Both wars involved a vast majority of the world's countries, forming two opposing military alliances. The scale of mobilization and the impact on societies were unprecedented in human history.
The First World War, often called the Great War, was triggered by a complex web of alliances,
The Second World War was even more widespread and destructive. It began with the invasion of Poland