Countries fighting in world war 1 and their leaders?

World War I involved two major alliances: the Allies and the Central Powers. The key Allied leaders included British Prime Minister David Lloyd George, French President Georges Clemenceau, and Italian Prime Minister Vittorio Orlando. The Central Powers were primarily led by German Emperor Wilhelm II, Austro-Hungarian Emperor Franz Joseph I, and Ottoman Sultan Mehmed V. The conflict lasted from 1914 to 1918, resulting in significant political and territorial changes in Europe.