The correct answer is the ''Japanese''.
Answer:
Chuska and San Mateo mountains.
Explanation:
The strontium isotopes indicate that timbers and logs used to build houses and infrastructures at Chaco Canyon came from Chuska and San Mateo mountains.
These mountains are about 100 kilometres away from the canyon and Strontium ratio from the Chaco canon's dust, water and bedrock reveals that these construction beams were from the Chuska and San Mateo mountains.
They were Desirable because of the oil they had
Potatoes and Corn were both initially grown by mesoamerican civilizations in the new world, or as it is known today, North and South America. Cattle and Wheat were both grown initially in Europe and were used to signify status and barter with others for goods just as much as they were used for eating.