I think the word you're looking for is "Progressive".
The term Liberal has changed dramatically and has been usurped by the Progressive movement. There is nothing classically liberal about wanting the government to control, approve, or in any way participate in individual economic or social decisions.
Babylonia had a number of rulers, but I think the one you mean, the one that is particularly know for the laws was Hammurabi (who lived in 18th and 17th century BC). The law is known as the Code of Hammurabi.
Sun; heliocentric. or D ;)