Final answer:
Trench warfare in WWI involved opposing trenches and a dangerous area called no man's land.
Step-by-step explanation:
Trench warfare dominated the style of fighting in WWI. The opposing sides dug trenches to protect themselves from enemy fire. In between the trenches was an area known as "no man's land", which was a dangerous zone with barbed wire, landmines, and constant gunfire. Soldiers would often have to traverse this perilous area to launch attacks on the enemy trenches.
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