The answer would be, "Characteristics, practices, and customs that are passed down through family, clans, gender groups, or larger cultural groups."
The first one is more of a genetic thing, while the third one shows family heirlooms or such.
Hope this helps! :)
There were actually several building techniques that were introduced by the Romans, but perhaps the most important was the bridge building technique that allowed bridges to be built without supports.
I am pretty sure it A. and B. Hope this Helps:)
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