Question

1. which of the following was not used to break through trench lines? a. mounted cavalry charges not true b. heavy bombardments with artillery not strongly supported c. newly developed tanks true as historically proven d. chemical weapon attacks false as shown

Explanation:

To determine which was not used to break through trench lines, we analyze each option:

• Mounted cavalry charges: Trench warfare (e.g., in WWI) made cavalry charges ineffective due to machine guns and trench defenses, so they weren’t used to break trenches.
• Heavy artillery bombardments: Were used to soften enemy lines before attacks, though effectiveness varied.
• Newly developed tanks: Tanks were introduced in WWI specifically to break through trench lines and cross no - man’s - land.
• Chemical weapon attacks: Were used to disrupt and weaken trench - held enemies.

So, mounted cavalry charges were not effective or used for breaking trench lines.

Answer:

A. Mounted cavalry charges