The Romans liked Greek art and often took Greek slaves to make art for them.
Could you link the piece of art?
Depends on the person and how skilled one is at these things. But I personally, would say that just the acting alone would be difficult. Mostly because i'm awkward and don't like speaking in front of people. Especially a large audience.
Believe it or not, they were found by four teenage boys!
The most important limitation of stone is the lack of tensile strength, the capacity of a material to withstand binding.
Stone is durable and impressive stuff, but it's also challenging to quarry, and heavy to move, and it has tension and stress limitations. Where there are resources available to excavate and cut it precisely, stone can be an extremely strong and useful natural material. Unlike brick, it can be stacked without mortar and support heavy vertical loads. Stone resists deforming, weathers the elements well, withstands fire and helps maintain stable interior environments.
