A partly enclosed coastal body of water in which river water is mixed with seawater is called an estuary. An estuary is thus defined by salinity rather than geography. Many coastal features designated by other names are in fact estuaries (for instance, Chesapeake Bay). Some of the oldest continuous civilizations have flourished in estuarine environments (for example, the Tigris and Euphrates rivers, the Nile delta, and the Ganges delta).
âFederal crimesâ refer specifically to offenses that violate U.S. federal laws. They are investigated by federal law enforcement and prosecuted by United States attorneys in federal courts with federal judges.
Federal Laws and Agency Enforcement. One way to learn about federal laws and regulations is through the federal agencies charged with enforcing them. Check the list below for links to agency sites on popular legal topics. Where no federal law exists, sites offer compilations of state laws on a topic. Business. Learn About Business Laws; Copyright Law of the United States; Child Welfare