When did World War 1 take place?

Answer 1

World War I (WWI) or First World War (called at the time the Great War) was a major war centered on Europe that began in August 1914. The fighting ended in November 1918.

Answer 2

World War I (WWI) or First World War (called at the time the Great War) was a major war centered on Europe that began in the summer of 1914. The fighting ended in November 1918.