In political science, the terms radical right and populist right have been used to refer to the range of European far-right parties that have grown in support since the late 1970s. Populist right wing groups have shared a number of causes, which typically include opposition to globalisation and immigration, criticism of multiculturalism, and opposition to the European Union. The ideological spectrum of the radical right extends from right-wing populism to white nationalism and neo-fascism.