The reason why groups often state their arrival on some foreign land as a 'discovery' is because, according to the primitive 'finders keepers' rule, this lends support to any claim they make to 'owning' the land. The land was already occupied and was being used by the inhabitants. The reason for putting 'discovery' in inverted commas is because the land was not, as so many explorers argue, discovered by them. This feature focuses on the first, as it was during this expedition that Vasco da Gama's crew landed in South Africa. Vasco da Gama carried out 2 expeditions between 14.