World War I was the biggest war in memory for the people during that time period. I believe they called it the war to end all wars. They hadn't had World War II yet, and so they though that World War I was going to be the biggest war in history for all time.
1/2 at least of the worlds population
The Meuse-Argonne Offensive. The biggest and bloodiest battle in American history.
It's the second biggest World War in history (after WWII). Millions died. It was the end of the Tsar in Russia, and many colonial empires around the world. It introduced the tank to land warfare, and was a massive upheaval from the world that preceded it.
The people that made the weapons on both sides and those that were in a position to take advantage of war reparations that were made by Germany while it lasted.
world war 1
America's population at the beginning of world war 1 was considered mobilization. After World War One fifth of the world's population was infected.
I am not being facetious: The biggest effect of World War I was World War II.
it was 14.123.000 before and 1 after the war
world 2 war
world war 1 and 2
Britain
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"The World war 1 trench was the biggest I have found" or "The trench in the ocean was the biggest in the world"
Russia
Russia.
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