Final answer:
World War I was one of the deadliest conflicts in human history because of the use of chemical weapons, prolonged trench warfare, and technological advancements in weaponry.
Step-by-step explanation:
World War I, also known as The Great War, was one of the deadliest conflicts in human history due to several factors:
- Use of Chemical Weapons: Both sides in the war employed poison gas, which caused immense suffering and widespread casualties.
- Trench Warfare: The introduction of new military technologies such as machine guns, tanks, and airplanes led to the development of complex trench systems. This type of warfare resulted in prolonged battles and high casualty rates.
- Technological Advancements: World War I witnessed the use of new weaponry such as artillery, machine guns, and airplanes, which increased the destructive power of the war and resulted in massive casualties.