The as a subject was very rare in early christian art; in fact, it was unknown prior to the fifth century.

A  documentary film  is a nonfictional motion picture intended to document some aspect of reality, primarily for the purposes of instruction, education, or maintaining a historical record.example: farenheit 911

Answernon-religious themes became more popular, and people also wanted to show off their wealth because painting was a sign of this at the time;

Ibelieve it is called classical  sculpture