A major war that happened in 1914 over Serbia and
Austria-Hungary. allow me to explain, Serbia wants to expand, and turns to Austria-Hungary, and assassinated
Arch Duke (the king of
Austria's nephew) in Bosnia, which lead to Austria declaring war on Serbia, because Russia was allies with Serbia, they declared war on Austria-Hungary, and since Germany was allied to Austria-Hungary, they declared war on Russia. Since France was gonna declare war on Germany for
Invading Russia for invading Austria for invading Serbia... Germany did it first. which now causes WW1. Further into the war we have British joining the allied powers (Serbia, Russia, and France.) Because Germany invaded Belgium to get into France. then the Ottomans help the
Central Powers (Austria and Germany) for Crimea. and soon after Bulgaria joins in for a chance to regain their lands lost from the 2nd
Balkan War. Soon we have Italy switching sides. we have more and more countries join in until Germany made a horrible mistake. Since USA)was gaining power rapidly. they asked Mexico to help invade the USA to stop them. But it was intercepted by the British and sent to the USA. which lead to USA declaring war on the Central Powers and ending the war once and for all. US troops arrive in Europe and destroy the Central Powers, Austria-Hungary and the Ottomans surrendered and now Germany is surrounded on all sides. they had no choice, but to surrender too, leading to the Treaty of Versailles. Ending the war