World War I
The war began in July 1914, when Austria-Hungary declared war on Serbia, and quickly spread as other countries joined the conflict.
World War I (1914-1918) was a global conflict that involved the majority of the world's nations, including all of the great powers, organized into two opposing military alliances: the Allies and the Central Powers. The war began in July 1914, when Austria-Hungary declared war on Serbia, and quickly spread as other countries joined the conflict.
The main causes of World War I were militarism, alliances, imperialism, and nationalism. Tensions between the major powers had been building for years, and a number of political and economic factors contributed to the outbreak of war.The war was fought on multiple fronts, including the Western Front (which saw some of the bloodiest and most destructive fighting of the war), the Eastern Front, and the Middle Eastern Front.
It was also the first war in which aircraft, tanks, and chemical weapons were used on a large scale.The war resulted in millions of deaths and injuries, and had a profound impact on the political and social landscape of the world. It also led to the collapse of several empires, including the Austro-Hungarian and Ottoman Empires, and contributed to the rise of communism in Russia.
World War I officially ended on November 11, 1918, when an armistice was signed between the Allies and the Central Powers. The Treaty of Versailles, which was signed in 1919, formally ended the war and imposed harsh penalties on Germany. The war had a lasting impact on international relations and set the stage for the conflicts of the 20th century, including World War II.