What makes a certain language become the dominant language in a certain region on Earth?

answer; i believe that the correct answer is (behavioristic)good luck

why does vagina taste like fish water (asking for a friend)

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.

answer; ( insanity );