They developed resilient breeds of crops such as potatoes, quinoa and corn. They built cisterns and irrigation canals that snaked and angled down and around the mountains. And they cut terraces into the hillsides, progressively steeper, from the valleys up the slope.
I think that they should not have so that the US would have Iraq as a friendly country. The US would want a lot of countries that are nice to them so they don't need much wars. Also, they could have made some deal with Iraq to stop the fighting and both get a share in what they want.
Those are faces of the president.
Answer:
The Answer is gonna be C) Trade for them,