Final answer:
The analysis of artifacts in burial mounds supports the statement that the Hopewell chiefdom had a complex social structure.
Step-by-step explanation:
The analysis of artifacts in burial mounds supports the statement that the Hopewell chiefdom had a complex social structure. The presence of ceremonial objects made of various materials and shaped into bird claws and totem animals suggests the existence of shamanistic figures with specific roles and responsibilities. The burial mounds also provide evidence of extensive long-distance trading, indicating interaction and communication between different communities.