World War I began in 1914 after the assassination of Archduke Franz Ferdinand of Austria-Hungary by Serbian nationalists. The system of alliances that had formed between European powers over previous decades caused Germany and Austria-Hungary to declare war on Serbia's allies, drawing other countries into the war. The war was the first "total war" and involved new industrial weapons and tactics like trench warfare and aerial bombing, resulting in unprecedented casualties and hardship for soldiers and civilians. After years of costly stalemate, Germany surrendered in 1918 and was forced to accept the punitive Treaty of Versailles, sowing the seeds for future conflict.