Why is trench warfare is important in WWI

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However, with the wide use of artillery and new inventions like machine guns, trench warfare became a very important factor during World War 1. Because the goal of trench warfare was to defend one’s own trench while attempting to take the enemy’s at the same time, neither side gained any ground in a short period of time.

Explanation:

escalation means to increase in intensity, extent, or amount.

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