World War I and World War II can be compared in terms of causes, parties involved, major fronts or theaters of war, military operations, weapons/warfare, foundations for peace, and global effects. 1. Causes Nationalism can be said to be the number 1 cause of both the First and Second World Wars. However, while the First World War was provoked mainly by Germany's urge to prove itself better than the United Kingdom, the Second World War was provoked by a different kind of nationalism, namely a reaffirmation nationalism: Germany wanted both to take revenge than to show the world how in the First World War, imperialism also played an important role in triggering the Second World War: one of the main causes of the Second World War was Mussolini and Hitler's hunger for territory. Furthermore, just as during the First World War, several alliances were made before the Second World War that contributed to the outbreak of hostilities: in 1934, Germany and Poland signed a non-aggression pact; later, Hitler and Mussolini jointly signed the Anti-Comintern Pact with the Japanese, the main goal of which was to limit communist influence in the world (the alliance became known as the Axis Powers). Finally, in August 1939, Hitler and Stalin signed the Nazi-Soviet pact, with which the two bitter enemies committed not to attack each other and to divide Poland between them (although this second clause was kept secret). of countries fought among themselves both during the First World War and during the Second World War: in the First World War, the Central Powers (Germany, Austria-Hungary, Turkey) faced the Allies (France, United Kingdom, Russia), 1 and in World War II, the Axis Powers (Germany, Russia2, Italy and Japan) fought against the Allies (United Kingdom, France and the United States).3. Main fronts or theaters of warBoth the First and Second World Wars were fought on many fronts: on land, at sea and in the air, in... middle of paper......in countries around the world: the World War I led to the creation of new states (Belgium, Poland, Czechoslovakia, and Austria) intended to act as a buffer between Russia and Germany, and all newly created republics adopted democratic constitutions. In turn, the Second World War gave a real impetus to independence movements in the colonies held by European countries: within 3 years, India gained independence from the United Kingdom, and 20 years later Great Britain would lose almost everything his empire. The economic recovery after World War II was even stronger. difficult than after the First World War. This effectively strengthened the will to cooperate and over the next 20 years led to the creation of the first stages of the European Union. Last but not least, both the First and Second World Wars led to the creation of international organizations aimed at helping maintain world peace, namely: the League of Nations and the UN respectively.