The British introduced the tank in World War 1 because they hoped to break the stalemate by successfully conquering No Man's Land. Option C is correct.
Tanks were used for the first time during the Battle of the Somme in 1916. The British turned to tanks as one way to cross the No Man`s Land and break through the enemy trench system.
The name 'tank' came from British attempts to ensure the secrecy of the new weapons under the guise of water tanks. Britain used tanks in combat for the first time in the Battle of Flers-Courcelette on 15 September 1916.
The Treaty on Open Skies entered into force on January 1, 2002, and currently has 34 party states. It establishes a program of unarmed aerial surveillance flights over the entire territory of its participants.
