Forced assimilation is an involuntary process of cultural assimilation of religious or ethnic minority groups during which they are forced to adopt language, national identity, norms, mores, customs, traditions, values, mentality, perceptions, way of life, and often religion and ideology of established and generally larger community belonging to dominant culture by government. Also enforcement of a new language in legislation, education, literature, worshiping counts as forced assimilation. Unlike ethnic cleansing, the local population is not outright destroyed and may or may not be forced to leave a certain area. Instead the assimilation of the population is made mandatory. This is also called mandatory assimilation by scholars who study genocide and nationalism. Mandatory assimilation has sometimes been made a policy of new or contested nations, often during or in the aftermath of a war. Some examples are both the German and French forced assimilation in the provinces Alsace and (at least a part of) Lorraine, and some decades after the Swedish conquests of the Danish provinces Scania, Blekinge and Halland the local population was submitted to forced assimilation, or even the forced assimilation of ethnic Teochews in Bangkok by the Siam government during World War I until the 1973 uprising.