Answer:
a party where the guests wear masks
Step-by-step explanation:
Masquerade ball is an old tradition fmor the 15th centuries when during Carnival season the wealthy sectors of the society had parties where they attended with masks that covered part of their faces, and they´d dance and feast, in this modern days the usage of masquerade balls are more of a tematic for parties, but Masquerade ball is a party where the guests wear masks.