What evidence is there,from this time,that war was frequent between city-states?

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All three choices provide evidence that war was frequent between city-states. Increasing numbers of bronze weapons suggest a need for increased military strength and preparation for battle. More artistic depictions of battle victories indicate that warfare was a significant aspect of city-state culture and that battles were frequent enough to produce notable victories. The construction of high walls around cities suggests that protection against attack was a vital concern, which would not have been a necessity if warfare was infrequent. Therefore, all three choices together provide the strongest evidence that war was frequent between city-states during this time.

What Evidence Is There,from This Time,that War Was Frequent Between