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.
Contents. A Bill is a proposed law which is introduced into Parliament. Once a Bill has been debated and then approved by each House of Parliament, and has received Royal Assent, it becomes law and is known as an Act. Any Member of Parliament can introduce a Bill.