Which defensive earthwork was constructed by Adolfo Alsina in 1876 to protect rural settlements from indigenous raids?
Answer and explanation
Correct answer: D. The Zanja de Alsina, a deep trench stretching over hundreds of kilometers
- Step 1: Alsina was War Minister under Avellaneda and advocated a gradual defensive frontier. Step 2. The trench was three meters wide and two meters deep to prevent stolen cattle from crossing. Answer: The Zanja de Alsina, a deep trench stretching over hundreds of kilometers. Why not the others: Following Alsina's death in 1877, Roca abandoned this strategy for offensive warfare.
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