It is used to control businesses who attempt to use their economic influence to distort market prices at the expense of consumer welfare. Immigration law and nationality law concern the rights of foreigners to live and work in a nation-state that is not their own and to acquire or lose citizenship. Both also involve the right of asylum and the problem of stateless individuals.
- Canon law is only in use by members of the Catholic Church, the Eastern Orthodox Church and the Anglican Communion.
- By the 22nd century BC, the ancient Sumerian ruler Ur-Nammu had formulated the first law code,
