Which technologies were new in World War 1?

World War I saw the introduction of several new technologies that transformed warfare, including the use of tanks, which provided mobility and protection on the battlefield. Airplanes were also utilized for reconnaissance and later for combat, marking the beginning of aerial warfare. Additionally, machine guns became more advanced, leading to devastating firepower, while poison gas introduced a new and terrifying method of attack. These innovations significantly changed military strategy and tactics during the conflict.