The First World War was a world war because it involved many of the world's great powers and their colonies, spanning multiple continents. It was not confined to a single region or country, but rather spread across Europe, Asia, Africa, and the Middle East. The conflict also drew in countries from around the world through alliances and treaties, making it a truly global conflict. The war's impact was felt on a global scale, with millions of soldiers and civilians from various countries participating and being affected by the conflict. **

It is difficult to compare the two wars as both had devastating consequences and resulted in immense loss of life. The First World War saw the use of trench warfare and chemical weapons, resulting in a high number of casualties. The Second World War, on the other hand, saw the use of more advanced weaponry, including the atomic bomb, and resulted in the Holocaust and widespread destruction. Both wars had far-reaching impacts on the world, and it is difficult to determine which was worse. **

The Second World War turned from a European war into a world war primarily due to the expansionist policies of Nazi Germany and Japan. Germany's invasion of Poland in 1939 prompted Britain and France to declare war, drawing in their colonies and allies from around the world. Japan's aggressive actions in Asia, such as the invasion of China and the attack on Pearl Harbor in 1941, further escalated the conflict by involving countries in the Pacific and Southeast Asia. The alliances formed between the Axis powers and the Allied powers also contributed to the global nature of the war, as countries from different regions joined the fight on either side. **

The Second World War occurred after the First World War due to a combination of factors. The Treaty of Versailles, which ended the First World War, imposed heavy reparations and territorial losses on Germany, leading to economic hardship and resentment. Additionally, the rise of aggressive and expansionist regimes in Germany, Italy, and Japan, as well as the failure of the League of Nations to prevent further aggression, contributed to the outbreak of the Second World War. These factors, along with unresolved tensions and unresolved issues from the First World War, ultimately led to the eruption of another global conflict. **

Yes, the First World War is considered a modern war due to the use of advanced technology and tactics that were unprecedented at the time. The war saw the introduction of new weapons such as tanks, airplanes, and chemical warfare, which changed the nature of warfare. Additionally, the scale of the conflict involving multiple countries and resulting in millions of casualties marked a departure from previous wars in terms of its global impact and devastation. Overall, the First World War is seen as a turning point in military history towards modern warfare. **

First World War fighters were soldiers who fought in the conflict that took place from 1914 to 1918. They were often young men who were conscripted or volunteered to serve in the military. These fighters faced harsh conditions in the trenches, including exposure to extreme weather, disease, and constant threat of enemy attacks. Many of them experienced trauma and loss during the war, and their sacrifices are remembered and honored to this day. **

A First World War fighter refers to the aircraft used by various countries during World War I for aerial combat. These fighters were typically small, single-seater planes equipped with machine guns and were used to engage in dogfights with enemy aircraft. Some famous examples of First World War fighters include the British Sopwith Camel, the German Fokker Dr.I, and the French SPAD S.XIII. These fighters played a crucial role in shaping the tactics and strategies of aerial warfare during the conflict. **

The 30 Years' War is not considered a first world war. While it was a major conflict that involved many European powers and had far-reaching consequences, it was primarily focused on the Holy Roman Empire and its surrounding regions. The term "world war" is typically used to describe a conflict that involves multiple major world powers and has a global impact, which does not fully apply to the 30 Years' War. Additionally, the concept of a "world war" as we understand it today did not exist during the time of the 30 Years' War. **