Maybe because it helped destroy a few monarchies
made a few organizations an immense amount of money and consequently gave their backers increased power
rearranged European, colonial and Middle Eastern borders to suit Britain and France
"'Certainly among the Allies, no two countries gained more territorially than Britain and France. The French Republic made out like bandits, regaining Alsace-Lorraine, occupying part of Germany for a time, most of Cameroon, half of Togo and the mandates of Lebanon and Syria from what had been the Ottoman Empire. The British Empire, already the largest in the world, grew to its peak of territorial expansion after World War I with even the “colonies” having “colonies” of their own. The British Empire gained half of Togo, some border territories of Cameroon, all of German Southwest Africa, the vast majority of German East Africa, the mandates of Palestine, Jordan and Iraq in the Middle East, German New Guinea and the southernmost German islands in the Pacific (the northern islands went to Japan as did the German port in China but this was only temporary and was handed back to China later). The British had also benefited from eliminating Germany as an industrial, colonial and naval competitor and France benefited from the destruction of Germany, becoming once again the most powerful country entirely in Europe. France also received, as did others to varying degrees, or was supposed to receive massive amounts of monetary reparations from Germany for the large part of France that had been devastated in the fighting on the western front.''
