Answer:Obsidian was volcanic glass in a ring of volcanoes along the Pacific coast of the Maya area. Mayan technicians made techniques for cutting sharp blades. As said, Mayans used specialized jade tools that helped their technological achievements. Maya is thought to be the first civil engineers of the Americas.
Explanation:
No, as it was not created in the time period that you are studying.
Private or free enterprise are 2 synonyms for capitalism
The answer is D. irrigation system.