Answer :
Final answer:
World War I, known as The Great War, was unprecedented in scale, mechanization, and its lasting impact, resulting in immense casualties and setting the stage for future global conflicts.
Explanation:
World War I is often described as The Great War because of its unprecedented scale and impact on history. It was the world's first mechanized, impersonal war with the introduction of advanced technology such as tanks, airplanes, and poison gas, fundamentally changing how wars were fought. The conflict saw mass casualties, with over 10 million military deaths and millions of civilian casualties due to military action and related causes. The Great War also failed to resolve the nationalist rivalries that sparked it, setting the stage for further global conflicts including World War II, making it a seminal event in modern history.