The First World War, generally speaking, lasted from 1914 to 1918. Still in general terms, most historians agree the First World War lasted four years, four months.
21 years.
100 years
21 years.
Switzerland has a long history of neutrality.
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World War 1 was known for its long and dangerous trench warfare and for extended artillery bombardments.
NO it wasnt that long it was about 10-15 years when world war 2 started AFTER world on 1 . :)
World War I ended in 1917 and World War II began in 1939 - there was 21 years in between them.
3 years =)
i meter
They wore helmets long before world war 1.
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