For those A+ people! Dion Boucicault is the answer.
Yes, Voltaire supported copyright legislation. He believed that the protection of intellectual property rights would encourage creativity and innovation by ensuring that authors and creators could benefit financially from their work.
Modern copyright dates from the Statute of Anne, 1709.
In the US, current copyright legislation is found in Circular 92 (link below).
In general, content creators and owners support copyright legislation, as it almost always benefits them. A current supporter of copyright in the US is Utah Senator Orrin Hatch, who as a songwriter, is a member of ASCAP.
The legislation of whatever jurisdiction you happen to be in.
Parliament amends and expands copyright law as needed, within the bounds of the Berne Convention.
The exact law varies from country to country. In the US, for example, it is US Code Title 17, the Copyright Act.
You will find all 13 chapters of current US copyright law, as well as significant appendices at the link below.
Copyright law applies virtually equally to both "hard copy" and digital works.
It varies from country to country, and also by your definition of a copyright law. In the US, in the strictest terms, the most recent copyright act was in 1976; however there is almost a steady stream of legislation that affects copyright.
Both!