Linguistic hypothesis proposing the existence of an ancestral Indo-European language that is the hearth of the ancient Latin, Greek, and Sanskrit languages which hearth would link modern languages from Scandinavia to North Africa and from North America through parts of Asia to Australia.

What does language diffusion mean?

This change where people give up (partially) use of one language in favor of another is called language shift. … To find out why language shift happens and why some languages are being used less and less, one needs to first understand the dynamics behind language shift.

What is nostratic in human geography?

Explanation: The word “Nostratic” is used to describe a hypothesized proto-macrolanguage family that was spoken by people somewhere in Asia roughly fifteen thousand years ago. According to the theory, all Indo-European, Dravidian, Afro-Asiatic, Uralic, and Kartvelian languages derive from this one macrolanguage.