Dutch nationality law is based primarily on the principle of Jus sanguinis and is governed by the Kingdom Act on the Netherlands nationality (Dutch: Rijkswet op het Nederlanderschap). Thus citizenship is conferred primarily by birth to a Dutch parent, irrespective of place of birth. Children born in the Netherlands to two foreign parents do not acquire Dutch citizenship at birth, unless special criteria are met. Despite the existence of four different countries in the Kingdom of the Netherlands, only one category of citizen is distinguished in Dutch nationality law (Nederlandse / Dutch).