Conferences ; Sprachenpolitik; Language management; Language politics ; Sprachattitüde; Linguizismus; Linguicism; Prestige; Monolinguale Ideologie; Monolingual ideology; Sprachliche Unsicherheit; Linguistic insecurity ; Multilingualism; Polylingualism; Plurilingualism ; English as international medium ; Sprachentod; Extinct language; Language endangerment; Bedrohte Sprache; Linguicide; Linguizid; Language death ; German ; English