Question

World war 1 lasted 4 years , what were the war years?

Answer 1

World war 1 began on 28 July 1914 and ended on 11 November 1918, so the years when WW1 lasted were 1914, 1915, 1916, 1917, 1918 it lasted exactly 4 years 3 months and 2 weeks.

Answer 2

the war lasted from 1914-1918