• AccidentalAiChan
What factor allowed the Incas to use their military efficiently? they developed an extensive system of paved stone roads they created a unique record-keeping system for military campaigns they adopted Spanish military technology and used them against their enemies they used rivers to transport their troops
  • Stacey Warren - Expert
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  • jamiebookeater
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  • anonymous
The First one, The Inca civilization went down hill relatively quickly due to the civil wars and after the arrival of Pizarro.
  • KingOfHou
The correct answer is 'they developed an extensive system of paved stone roads.'

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