Final answer:
The Natives in the Southwest, including the Anasazi, established trade with Mexicans in post-European colonization period.
Step-by-step explanation:
Among the choices given, the Natives in the Southwest established trade primarily with (D) Mexicans. The native populations in the Southwest, which included agriculturalists like the Hopi, Zuni, and Navajo, built permanent settlements and engaged in farming of corn and squash. They interacted and traded with nearby groups, including Mexicans following European colonization. Specifically, the Anasazi, or Ancient Puebloans, known for their cliff dwellings and large complex towns, emerged in the Four Corners area and were among these trading societies.