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

Question

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

anonymous · Answer

A). roads

anonymous · Answer

its b because they had  a special way of record keeping and communication in their land (that no one could decipher) I think they tied knots in ropes called like, Quapa or something like that im not really sure

anonymous · Answer

That did not help their military though. Trust me on this, I took AP World

kingofhou · Answer

The correct answer is 'they developed an extensive system of paved stone roads.'