Which lanquaqe derived first.?

The greatest step in language evolution would have been the progression from primitive, pidgin-like communication to a creole-like language with all the grammar and syntax of modern languages. Many scholars believe that this step could only have been accomplished with some biological change to the brain, such as a mutation. It has been suggested that a gene such as FOXP2 may have undergone a mutation allowing humans to communicate. Evidence suggests that this change took place somewhere in East Africa around 100,000 to 50,000 years ago, which rapidly brought about significant changes that are apparent in the fossil record. There is still some debate as to whether language developed gradually over thousands of years or whether it appeared suddenly.

According to the Out of Africa hypothesis, around 50,000 years ago a group of humans left Africa and proceeded to colonize the rest of the world, including Australia and the Americas, which had never been populated by archaic hominids. Some scientists believe that Homosapiens did not leave Africa before that, because they had not yet attained modern cognition and language, and consequently lacked the skills or the numbers required to migrate. However, given the fact that Homoerectus managed to leave the continent much earlier (without extensive use of language, sophisticated tools, nor anatomical modernity), the reasons why anatomically modern humans remained in Africa likely had more to do with climatic conditions.

This continues http://en.wikipedia.org/wiki/Origin_of_language