Final answer:
The summary explains the three key stages of the First World War: Background, Start of the War, and Evolution, highlighting significant events and developments throughout the conflict.
Explanation:
The First World War had three main stages:
- Background to the War: This encompassed the complex web of alliances, militarism, imperialism, and nationalism that set the stage for the conflict.
- The Start of the War: The assassination of Archduke Franz Ferdinand of Austria triggered the war, leading to the mobilization of troops and the declaration of war.
- The Evolution of the War: From trench warfare on the Western Front to major battles and the eventual Armistice in 1918, the war evolved and shaped the modern world.
SEO Keywords: First World War, Stages, Background, Start of the War, Evolution, Trench Warfare
Learn more about First World War here:
https://brainly.com/question/43008071