Basically the issue with the knees is you don't want to start riding a horse too strenuously until the knees close. For each breed it is different. Some close at 3, others, like drafts and WBs, can wait until 5 or so.
the act of making or enacting laws. 2. a law or a body of laws enacted. Origin of legislation.
Legislative Bills. Legislation begins with the submission of a bill to the legislature for consideration. A bill is a draft, or tentative version, of what might become part of the written law. A bill that is enacted is called an act or statute.