why did the british introduce the tank in world war i
Tanks in World War I The development of tanks in World War I was a response to the stalemate that had developed on the Western Front. Although vehicles that incorporated the basic principles of the tank (armour, firepower, and all-terrain mobility) had been projected in the decade or so before the War, it was the alarmingly heavy casualties of the start of its trench warfare that stimulated development.[1][2] Research took place in both Great Britain and France, with Germany only belatedly following the Allies' lead.
History of the United Kingdom during the First World War The ostensible reason given was that Britain was required to safeguard Belgium's neutrality under the 1839 Treaty of London. The German invasion of Belgium was, therefore, the casus belli and, importantly, legitimized and galvanized popular support for the war.