The studies cover where the language originated and how it spread.

Every language used today originated in a pre-written, or oral form.

"I believe their language originated outside the local unconscious," Spock said.

So, their language originates from a more isolated form of earlier Kipchak.

Many languages originated in Iran, but Persian is the most used language.

The Irish language originated in Ireland, and has spread to other countries at different periods.

Spain's present languages, its religion, and the basis of its laws originate from this period.

Many people believe the language originated in Jiangyong County.

Atkinson theorized that language may have originated in Africa.

Further, it teaches that all languages, cultures, religions, and civilizations originate in Japan.