Was the mosaic an innov ation of Romans?

Answer 1

Yes. The mosaic is the only art form not borrowed from other cultures.

From Musivarius:

It tends to be acepted that the Romans took the craft of mosaic from the Greeks who developed floor mosaics made with pebbles starting in the 5th century BC. These began to be made using cut stone from about the 3rd century BC and with the take over of Greece in 2nd century BC the Romans developed a taste for floor mosaics.