Final answer:
The Civil War is considered the first Modern War because of the technological advancements that took place during the Industrial Revolution. While tanks and airplanes weren't used, other modern weapons and communication methods were utilized.
Step-by-step explanation:
The Civil War is referred to as the first Modern War because it took place after the Industrial Revolution, which led to significant advancements in technology and warfare. Although tanks and airplanes were not used during the Civil War, it did witness the introduction of some modern weapons like rifled muskets and ironclad ships. The use of railways, telegraphs, and photography also played a role in making it a modern war.
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