Enact or enacted means to make into law by authoritative act. For example, the statute was enacted in the year 1945. It primarily means to perform the legislative act with reference to a bill which gives it the validity of law. In short, a bill is enacted when it becomes a law that is when the Governor signs it and makes it effective.
Enact, when used in statutes also means to provide. For example, the statute of frauds enacts that no action may be brought on certain types of contracts unless the plaintiff has a signed writing to prove the agreement.