The Caddo traded goods across which regions?

• A. Texas, the Mississippi River valley, and the southeastern United States.
• B. Only East Texas.
• C. The Pacific Northwest.
• D. The Arctic.

Answer: (A)

The main idea here is that the Caddo developed broad trading networks that connected several regions, not just a small locality. The Caddo lived along the Red River in what is now East Texas and nearby areas, and they moved goods through river corridors to the Mississippi River valley and into the Southeastern United States. This allowed them to exchange a wide range of items—craft goods, foodstuffs, and other resources—with groups across these regions, showing how long-distance trade linked Texas, the Mississippi valley, and the Southeast.

The other regions listed don’t fit. The Pacific Northwest is far from the Caddo territory and had its own distinct networks, while the Arctic is well north of where the Caddo lived. Limiting trade to East Texas ignores the historical connections evidenced by the evidence of exchanges across those broader regions.