Alaska — canada_west borders (2): British Columbia, YukonAlaskaYukon — canada_west borders (3): Alaska, British Columbia, Northwest TerritoriesYukonNorthwest Territories — canada_west borders (5): Alberta, British Columbia, Nunavut, Saskatchewan, YukonNorthwest TerritoriesBritish Columbia — canada_west borders (6): Alaska, Alberta, Cascadia, Northwest Territories, The Rockies, YukonBritish ColumbiaAlberta — canada_west borders (4): British Columbia, Northwest Territories, The Rockies, SaskatchewanAlbertaNunavut — canada_east borders (4): Northwest Territories, Quebec, Saskatchewan, GreenlandNunavutSaskatchewan — canada_east borders (5): Alberta, Northwest Territories, Nunavut, Ontario, The RockiesSaskatchewanOntario — canada_east borders (5): Appalachia, The Mid-Atlantic, New England, Quebec, SaskatchewanOntarioQuebec — canada_east borders (4): The Maritimes, New England, Nunavut, OntarioQuebecThe Maritimes — canada_east borders (2): New England, QuebecThe MaritimesGreenland — canada_east borders (1): NunavutGreenlandCascadia — usa_west borders (4): British Columbia, California, The Great Basin, The RockiesCascadiaCalifornia — usa_west borders (4): Baja California, Cascadia, The Great Basin, The SouthwestCaliforniaThe Great Basin — usa_west borders (4): California, Cascadia, The Rockies, The SouthwestThe Great BasinThe Southwest — usa_west borders (5): Baja California, California, The Great Basin, The Rockies, SonoraThe SouthwestThe Rockies — usa_west borders (6): Alberta, British Columbia, Cascadia, The Great Basin, Saskatchewan, The SouthwestThe RockiesNew England — usa_east borders (4): The Maritimes, The Mid-Atlantic, Ontario, QuebecNew EnglandThe Mid-Atlantic — usa_east borders (3): Appalachia, New England, OntarioThe Mid-AtlanticAppalachia — usa_east borders (4): The Carolinas, Florida, The Mid-Atlantic, OntarioAppalachiaThe Carolinas — usa_east borders (2): Appalachia, FloridaThe CarolinasFlorida — usa_east borders (3): Appalachia, The Carolinas, CubaFloridaBaja California — mexico borders (3): California, Sonora, The SouthwestBaja CaliforniaSonora — mexico borders (3): Baja California, Central Mexico, The SouthwestSonoraCentral Mexico — mexico borders (2): Sonora, YucatanCentral MexicoYucatan — mexico borders (2): Central Mexico, CubaYucatanCuba — caribbean borders (4): Florida, Yucatan, Jamaica, HispaniolaCubaJamaica — caribbean borders (1): CubaJamaicaHispaniola — caribbean borders (2): Cuba, Puerto RicoHispaniolaPuerto Rico — caribbean borders (2): Hispaniola, The Lesser AntillesPuerto RicoThe Lesser Antilles — caribbean borders (1): Puerto RicoThe Lesser Antilles