mar 11, 1609 - Hugo Grotius publishes Mare Liberum (The Free Sea)
1609 — Hugo Grotius publishes Mare Liberum (The Free Sea) with arguments for the new principle that the sea was international territory and all nations were free to use it for seafaring trade. The ensuing debate had the British empire and France claim sovereignty over territorial waters to the distance within which cannon range could effectively protect it, the three mile (5 km) limit.
Added to timeline:
Environmental Science Timeline (10 Important Events)