 This area contains 17% of Cascadian land mass, but more than 80% of the Cascadian population.The Canada–US border is diminishing in the face of further economic, political and cultural integration with such programs as the enhanced drivers license program – which can be used to get across the Canada–US border between Washington and British Columbia.The term "Cascades" was first used for the Cascades Rapids, as early as the Astor Expedition.