16 Lingua Francas. Artificial languages.
Guidelines:
Lingua Franca in history
Lingua Franca nowadays
Artificial languages: Bopal, Kosmos, Novial ...
Esperanto
Ido
Sign languages
References:
1 our lecture
2 Victoria Fromkin, Robert Rodman: An Introduction to Language, Holt, Rinehart and Winston, Inc., USA, chapter 7, Language in Society, see Lingua Francas
Goerge Yule: The study of language,CUP, chapter 18 Sign Language