The tank was invented in Great Britain during the first world war in 1917 as an AFV desigened to stop trench warfare and was called a tank because?
It was round like a tank of water hence the name
The first tanks required fuel tanks strapped nearby and from this they got their name
As an act of secrecy to prevent the plans of the invention from falling into german hands
Tanks stands for Technological And New-age Knights of War