
Comparative survey of the world's languages and their development. Discusses the social and political effects of language barriers and explores the possibility of a worldwide language.
6.4
7.6
7.4
8.0
7.1
7.4
7.2
6.2
6.4
6.9
7.5
7.0
7.8
6.6
7.4
7.5
6.8
7.2