Final answer:
The U.S. Southwest Pueblos displayed features of communal activities in their large, shared living structures, plazas for gatherings, ceremonial kivas, communal storage of harvest, and extensive trade networks.
Step-by-step explanation:
Some features that indicate the U.S. Southwest Pueblos had communal activities include large, multi-storied apartment-like buildings that housed many people, which served to both foster a sense of community and efficiently use space. Pueblo Bonito in Chaco Canyon, for instance, featured open plazas at the heart of their communities that were likely used for gatherings and ceremonial purposes. Moreover, the kivas, which were ceremonial centers found at all Ancient Puebloan sites, signify the presence of communal religious and public events.
Another communal aspect of these Puebloan societies was the emphasis on agriculture, with large storage areas for the harvest, indicating a sharing of resources. The Ancient Puebloans also had intricate trade networks, seen through an array of artifacts found in their settlements from distant locations. These complex trading systems suggest a broader communal interaction between different groups and external communities.