历史小径·世界史英语30篇（6）
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Batch 0005-019 Bronze Tools Transformed Farming and War
批次0005-019：青铜工具变革农耕与战争
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Bronze tools appeared when people learned to mix copper and tin.
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Farmers used bronze hoes and sickles to work land more efficiently.
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Stronger plows let them cultivate heavier soils and grow more food.
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Bronze swords and spearheads gave warriors clear advantages in battle.
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Only elites controlled metal workshops, increasing their political power.
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Trade for tin and copper linked distant mountains and river valleys.
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Bronze age cities rose where metal, grain, and labor converged.
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This new material changed how people lived, fought, and ruled forever.