Proto-Algonquian (commonly abbreviated PA) is the proto-language from which the various Algonquian languages are descended. It is generally estimated to have been spoken around 2,500 to 3,000 years ago, but on the question of where it was spoken, there is less agreement. The Algonquian family, which is a branch of the larger Algic language family, is usually divided into three subgroups: Eastern Algonquian, which is a genetic subgroup, and Central Algonquian and Plains Algonquian, both of which are areal groupings. In the historical linguistics of North America, Proto-Algonquian is one of the best studied, most thoroughly reconstructed proto-languages. It is descended from Proto-Algic.