They did not like the idea at all. They wanted land period. The fact that the United States wanted their country to streach from coast to coast and that this land belonged to them anyway (according to manifest destiny) ment that Mexico would have to give up their claims or go to war for that land.
Answer:
That statement is true
Explanation:
A strong proof for this statement would be their irrigation system. At that time, the harrapans civilization was among the first society who manage to send water to agricultural fields that located far away from water source. (Advanced architectural and engineering skills are needed for this)
Because of this , they managed to eliminated hunger problems and continuously improve their economic strength due to the large amount of crops they're able to sell.