Answer:
The early Native Americans used the successful farming strategy of utilizing a complex irrigation system.
Explanation:
- Though the early native Americans were not much civilized, they bore phenomenal knowledge about agriculture and its techniques.
- It was through their conventional yet partially modernized techniques and intelligent use of available resources, the crops they took rarely failed.
- The irrigation techniques that made carrying water to the field convenient, do seem complex for their time but the Native Americans seem to have been expert at its use.