WW1

Also called: 

 First World War or Great War

Date:

 July 28, 1914 - November 11, 1918

• The First World War was the first truly global conflict and  one of the great watersheds of 20th-century geopolitical history. It led to the fall of four great imperial dynasties (in Germany, Russia, Austria-Hungary, and Turkey). From 1914 to 1918, fighting took place across several continents at sea and for the first time in the air.

• The war at sea

Fierce fighting also took place at sea. Attacks by surface vessels and submarines,alongside of blockades of ports, affected both military personnel and civilians.

Here is a short video that explains the First World War