Question

Which factor most contributed to the huge casualties suffered by the combatants in World War I?

Answer 1

Invention of new weapons/gases was HUGE, but Disease and famine was also a large factor

Answer 2

The factor that most contributed to the huge casualties in WWI was the new technology. WW1 happened during a time of huge industrialization and mass-production. This led to the creation of new weapons and warfare technology in general. Many innovations killed a large number of people like grenades, poison gas, artillery, submarines, warplanes, and tanks.