(A) frequent aerial raids by large bombers
(B) long marches of up to 100 miles per day
(C) long periods of relative peace during negotiations
(D) ** poor sanitary conditions and frequent gas attack
EXPLANATIONS BELOW
Concept note-1: -The intricate network of trenches contained command posts, forward supply dumps, first-aid stations, kitchens, and latrines. Most importantly, it had machine-gun emplacements to defend against an assault, and it had dugouts deep enough to shelter large numbers of defending troops during an enemy bombardment.
Concept note-2: -Trench warfare in World War I was employed primarily on the Western Front, an area of northern France and Belgium that saw combat between German troops and Allied forces from France, Great Britain and, later, the United States.
Concept note-3: -Trench warfare created a living environment for the men which was harsh, stagnant and extremely dangerous. Not only were trenches constantly under threat of attack from shells or other weapons, but there were also many health risks that developed into large-scale problems for medical personnel.
Concept note-4: -What were the characteristics of trench warfare? The Trench Warfare had rats, and soldiers lived in mud, there was no fresh food, and you could never sleep. If you were ordered to go in “no man’s land.” you were met many rounds of machine-gun fire. What factors contributed to Russia’s war difficulties?