Hello there,
Your correct answer would be: <span>A) "an irrigation system"
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My explanation: They were using wells and a underground pipeway connecting them to a local water table, ancient cultures were able to readily collect water from their wells.
Two basic types of satellite images are <span>infrared and colored, maybe?</span>
I believe the answer is Land Rights
They felt like they could not live with the native americans in this time..