Final answer:
Marble columns in private homes first appeared around 80 B.C.E., following the influence of Augustus and the Second Pompeian Style.
Explanation:
Marble columns were first used in private homes around 80 B.C.E. as part of the Second Pompeian Style, which developed from the First Style and incorporated elements like faux marble blocks.
Marble gained popularity after the reign of Augustus (31 B.C.E. - 14 C.E.), who transformed Rome's architecture by promoting the use of marble in building campaigns.
The Column of Trajan, made of Carrara marble and completed in 113 C.E., stands as a prime example of the exquisite use of marble in Roman architecture.
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