The answer is: control of water through dams or canals
advanced ideas or beliefs on death and burial
evidence of metal tools and weapons
many buildings used for a variety of reasons
Control of water through dams or canals were being made to distribute the water to sustain their agricultural fields.
Advanced ideas or beliefs on death could be seen on the monuments that exist in this society. Evidence of metal tools and weapons indicated that they had an advanced farming techniques along with hunting activities. Many buildings for different indicates these societies constantly held a public gathering as a form of socialization.