Question

when was 1st world war

Answer 1

First world war was started in 1914 and it lasted upto 1918 with the defeat of Germany.

Answer 2

First world war started on 28 july 1914
when austria declared war on serbia because they believe than assasination of austria princess archduke fardinand was palaned in serbia and executed by a student of 19year old gavrilo princep who got his weapons from serbia .
austri send warning and told them to hand over criminals . to which serbia refused and war started on 28 july 1914 after austria declared war on serbia .