Final answer:
Scholars believe that there were no class divisions in the Yangshao culture due to the absence of opulent tombs and the relatively homogeneous society indicated by their artifacts.
Step-by-step explanation:
Scholars believe that there were no class divisions in the Yangshao culture because of the evidence found in their archaeological sites and artifacts. For example, there is no evidence of large, opulent tombs that would suggest an aristocratic class. Instead, the burial sites show a more equal distribution of wealth and status. Additionally, the pottery and other artifacts found at Yangshao sites indicate a relatively homogeneous society without clear social stratification.