Probably the most dramatic linguistic result of world exploration is the invention of a pidgin or trade language. What happens when sailor and the local people meet and have no language in common? They do their best to communicate. Everyone instinctively talks in a simple way, making sentences shorter, repeating words, and avoiding difficult sounds and grammar. After a while, a pidgin language can become quite sophisticated, and be used as an everyday means of communication. It can even end up as a nationl, language, as has happened to Tok Pisin in Papua new Guinea - one of the most impressive linguistic consequences of sea travel ever.