Why did the Central Powers loose WWI?

Carme Arcarazo Sempere Why did the Central Powers lose World War One? The First World War, also called the Great War, began on 28 July 1914 and lasted until 11 November 1818. In this conflict all the world's great powers were involved, especially Europeans, which were divided in two opposing groups of alliances: the Allies, Triple Entente, and the Central Powers, Triple Alliance. The main countries involved were France, Great Britain, Russia (left in 1917), Italy (joined in 1915) and USA (joined in 1917) as the Allies, and Germany, Austria-Hungary, the Ottoman Empire and Bulgaria as the Central Powers. As in the end of every war, there is a winning side and a losing one, one who is victorious and another who is defeated. This time the Central Powers were the defeated ones. Mainly, this was due the weak alliances of Germany, the miscalculation made by the Central Powers and the entrance of USA in the war. Good introduction In the first place, Germany did not have as strong or powerful allies as those of Great Britain and France, with regards to their weaknesses, thus constantly having to help out the Austrians, Bulgarians and the Ottoman Empire. Good Austrians started fighting several fronts: in 1914 they attacked Serbia, this campaign was a complete disaster since they lost 227,000 out of a total forcé of 450,000 men. At that moment and during the whole war, in the Eastern front, they were trying to defeat the huge Russian army, which required an enormous amount of human effort and resources, but despise the endeavour this wasn't enough to succeed. In addition, Austria-Hungary was defeated by Italy at Vittorio-Veneto. Also, the Austrians had to face the attacks of Romania. 1 Furthermore, Bulgaria faced several fronts: it was defeated by the British...