Mare clausum defended a "Mare clausum" policy during the age of discovery. This was soon challenged by other European nations. From 30 BC to 117 AD the Roman Empire came to surround the Mediterranean by controlling most of its coasts. Romans started then to name this sea "mare nostrum" (Latin for "our sea"). At those times the period between November and March was considered the most dangerous for navigation, so it was declared ""mare clausum"" (closed sea), although bans on navigation were probably never enforced. In classical law the ocean was not territorial. However, since the Middle Ages maritime republics like the
What the Ancients Did for Us What the Ancients Did for Us What the Ancients Did for Us is a 2005 BBC documentary series presented by Adam Hart-Davis that examines the impact of ancient civilizations on modern society. The series was produced in conjunction with the Open University and is a departure from the previous series not only in that each episode is an hour long rather than half an hour (though heavily edited half-hour versions have also been shown), but also in that it does not concentrate on a single period of history but rather one ancient civilization per episode including the Chinese, the Indians