<span>The first striking change occurs with the appearance of new weapons. A machine gun was designed that used the recoil to operate the mechanism of the weapon in a continuous manner. The Parabellum-Pistole (Pistol Parabellum), is a semiautomatic pistol operated by recoil. There were three types of general-purpose pistols: revolvers, automatic pistols, and semiautomatic pistols. The rifle, became the most crucial infantry weapon, of the battlefields. The gases made their appearance sowing horror in the trenches, and the tank was undoubtedly one of the great novelties of the Great War.</span>
B. The answer is B i need 20 characters B
The answer is 1918' or if you are going to the nearest decade that would be the 1920's.
The answer is Mexico. They went to war and Texas won
They had to limit their army severely and pay heavy reparations which crippled the nation.