From 1914 to 1918 there was a war between Austria-Hungary, Germany and its allies, known as World War I. More than 30 countries were involved in this war. 16 million people died and 20 million were injured. Technological progress caused and ended the stalemate of this war. The stalemate occurred on the Western Front, which was located in the western part of Germany. The failure of the Schlieffen Plan forced both countries onto the defensive. Evidently, trench warfare was the main reason why the stalemate of the war occurred. Furthermore, the development of tanks broke the stalemate. Without the failure of the Schlieffen Plan, the country may not have been defensive and would not have built trenches that make much use of the development of technology and the advancement of technology caused occurred and ended the stalemate. The main reason for the stalemate was trench warfare. The development of technology has made the trench more complex and difficult to break through. Many new weapons were used in trench warfare. First, a new weapon called barbed wire was used. It was placed at the interval of each trench to protect the army from attacks. It was so hard that nothing could break the barbed wire. This made it difficult for soldiers to cross the enemy trench. The second weapon used was artillery. It was used regularly in 1914. It could raise the ground and break down the formation behind the front line. Also, long-range artillery fire was developed in that period. This type of artillery could fire from a place very far from the front line. Therefore, both countries made trenches deep enough to allow soldiers to hide underground and hide their bodies. Trenches could prevent soldiers from sheltering from enemy fire. A b... in the center of the card... and the cage on top would have prevented the attack, so they couldn't destroy it. In addition, the high weight of the tank could prevent it from falling into the trench, thus it allowed it to cross enemy trenches. He destroyed all the devices used for defense and advanced towards the enemy trench. Before these new weapons were used in trench warfare, nothing could break through the complex trench system. However, these new technological developments could break them and end the stalemate. The failure of the Schlieffen Plan forced both sides to fight complex trench warfare that included some new technologies, which resulted in stalemate. The stalemate was broken by tanks, another developed weapon. Thus, the development of new weapons and technologies created the stalemate, as well as ended it.