Stop racism, segregation and sexist
The use of trench warfare on the Western Front was a major military strategy that led to four years of war on the Western Front during World War 1 (1914-1918). The armies which comprised of millions faced each other in a line of trenches which extended from the Belgian Coast through to the North Eastern part of France and Switzerland. This resulted in combat between the German troops and the Allied forces of Britain, France, and later the United States.
I believe the answer is they had important rail and water routes ^^
The remnants of dozens of mammoths whose furs, tissues and internal organs were preserved intact for thousands of years in the ice and permafrost of Siberia have been examined by scientists who autopsied the bodies determined that many of these animals died suddenly as a result of fatal falls into crevices and holes hidden in the terrain. Other are believed to have died during violent blizzards that got the mammoths into a state of hypothermia very quickly.