The Great War In the late 19th and early 20th centuries, many saw war as a necessary component of modern statecraft and even saw war as the sign of the advent of a new age. The three main forces that triggered the First World War were: militarism, nationalism and imperialism. Militarism is the idea that a country is able to maintain strong military capabilities and be prepared to aggressively defend or promote national interests. Imperialism is defined as an empire created by a country that rules and governs people to create a civilized society. Finally, nationalism is the idea that a country's needs must take priority over all others. Heinrich von Tretschke, Henri Massis, and Alfred de Tarde wrote articles to express their pro-war spirit during World War I. They believed that nationalism was one of the main arguments that led European nations to go to war at the turn of the century. .At the beginning of the 20th century, an arms race had begun. One of the main issues that sparked World War I was militarism. Militarism simply means increasing military and naval forces ready to defend your nation. By focusing on one of the European nations involved during the war, Germany not only increased its military and naval influence, but also its strength as a nation to create allies even among neighboring countries. Between 1909 and 1911, Germany built Dreadnoughts, large, fast, heavily armed warships, to compete with Britain. At the same time, they expanded the passages from the Baltic to the North Sea. From 1913 to 1914 they increased the size of the army by adding another 170,000 men (Hunt et. al., 825-839). As Germany increased its military and naval forces, it also increased its control over the population, thus restoring a sense of nationalism to its people. It brings people together and unifies them in believing in one thing and that is winning the war against enemies. At the same time, he argues that the idea of ​​war motivates young people to defend their country and be willing to make sacrifices to support and achieve goals, regardless of the consequences, as long as they fight and support their goals. Overall, the cost of war was something that every European nation had to bear to gain the freedom they all desired. Although there were casualties, nevertheless, it brought out a sense of nationalism, militarism and imperialism in every nation which brought them together to achieve one goal and that is to be able to form a united nation and create allies strong enough to have the 'each other in times of need.