(A) Guerilla Warfare
(B) Nuclear Weaponry
(C) Biological Weapons
(D) ** Trench Warfare
EXPLANATIONS BELOW
Concept note-1: -Machine guns, poison gas, rapid-fire artillery, aerial bombardment, tanks, and submarines were all new innovations that brought about horrors never before seen on the battlefield. While most of the fighting happened on the ground in Europe, America was not immune from the fight.
Concept note-2: -During World War I, trench warfare was a defensive military tactic used extensively by both sides, allowing soldiers some protection from enemy fire but also hindering troops from readily advancing and thus prolonging the war. Trench warfare was the major combat tactic in France and Belgium.
Concept note-3: -World War I popularized the use of the machine gun-capable of bringing down row after row of soldiers from a distance on the battlefield. This weapon, along with barbed wire and mines, made movement across open land both difficult and dangerous. Thus trench warfare was born.
Concept note-4: -World War I was a war of trenches. After the early war of movement in the late summer of 1914, artillery and machine guns forced the armies on the Western Front to dig trenches to protect themselves. Fighting ground to a stalemate.
Concept note-5: -It was not able to fully finance the war effort through taxes. Which of the following was a result of the use of trench warfare during World War I? Soldiers experienced increasingly unsanitary conditions, including rat infestations.