There's no real answer to your question, because we don't even know what the first language was yet! We know it was a very long time ago, and the first evidence of language dates back to cuneiform.
Studies in Second Language Acquisition was created in 1978.
The American Language was created in 1919.
A Key Into the Language of America was created in 1643.
My first language is English.
There is no definitive number of first names in the English language as it constantly evolves with new names being created and used. There are thousands of first names in common usage, with more being added over time.
Unix was created first. The C programming language was created for Unix.
Studies in Second Language Acquisition was created in 1978.
The American Language was created in 1919.
The first English dictionary was created by Samuel Johnson and it was published in 1755. Johnson's dictionary was a landmark achievement in the standardization of the English language.
Bolak language was created in 1899.
The Language of Bees was created in 2009.
Sine Language was created in 2009.
Language Marketplace was created in 2000.
Language Mesh was created in 1959.
The Language Instinct was created in 1994.
Language Sciences was created in 1979.
A Pattern Language was created in 1977.