History of linguistics (19th century) ; Sprachnationalismus; Nationalism (linguistic) ; Nationalismus (sprachlicher) ; Language and nationality ; Community language; Netzwerk (Soziolinguistik) ; Network (sociolinguistics) ; Speech community ; Language planning; Purification of language; Sprachpurismus; Sprachverfall; Language decay; Language cultivation ; Hochsprache; Schriftsprache; Acrolect; Standard language ; Holländisch; Dutch