历史小径·世界史英语30篇（6）
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Batch 0012-038 City Walls Defined Power and Protection
批次0012-038：城墙界定权力与防护
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City walls marked where civic authority began and wild territory ended.
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Builders used mudbrick, stone, or rammed earth depending on local resources.
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Gates were heavily guarded and often decorated with royal symbols.
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Walls kept out raiders but also controlled who entered and paid taxes.
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Some cities like Jericho built walls as early as 8000 BCE.
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Rulers displayed strength by repairing or expanding walls after victories.
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Walls reflected wealth, engineering skill, and collective defense commitment.
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When walls fell, empires often followed soon afterward.