What country used a tank first?

The\nBritish\nwere the first country to use tanks in battle, on September 15, 1916 during the Battle of the Somme. The first tank used in battle was the British Mark I Male, also known as “Little Willie”.\nThe tanks were effective at crossing trenches and wire entanglements, but they had several problems.\nThe tanks were slow, had mechanical failures, and couldn’t cross soft or heavily cratered ground.\nThe tanks were easily knocked out by artillery fire.\nThe tanks inspired terror in the enemy.\nThe tanks provided important firepower to the infantry with their machine-guns and artillery pieces.