The Indo-European languages are a ..
Several variants of the kurgan hypothesis suppose that the Pontic-Caspian Steppe could be a secondary and late motherland, preceded by a first motherland located somewhere east of the , especially around the archeological site of (or possibly, south of the or somewhere not far from the Near East). This location could help to explain some interesting common features shared by Indo-European, the and the of south Caucasus (for instance, the root for : Indo-European matches with Semitic ).
Proto-Indo-Europeans - Wikipedia
A minority current of scholars suppose that Indo-European would come from the slow spread of languages and cultures brought by peoples who were expanding from , from the 7th millennium on. This scenario is supported especially by archeologist .
A very minority current, whose main proponent is linguist , states that the Indo-European family would have existed in since the . This suggests a very old continuity. According to Alinei, a lot of boundaries of current Indo-European languages would be very old, even if some former Indo-European languages enclosed within those boundaries have been replaced several times by new Indo-European languages. This theory insists about continuity chiefly in Europe but does not give detailed explanation concerning the presence of Indo-European languages in Asia.
Indo-European migrations - Wikipedia
The name was used as a synonym for Indo-European by several authors during the 19th century and the beginning of the 20th century. But in fact, (from ) designates chiefly the branch of Indo-European, rather than the Indo-European family as a whole. The use of as a native name of the original Indo-European people is only a hypothesis. The main problem is that some authors of the 19th century, and then the ideology, misappropriated the term in order to express the absurd idea of a so-called supremacy of a European “race”. After the massive crimes committed by the Nazis during the Second World War, the term has been abandoned by scholars as a synonym of Indo-European. But it is still accepted in its Sanskrit, attested sense, as a synonym of the Indo-Iranian branch.
Indo-European Languages Originated in Anatolia, …
However, his early separation (5000 BC) of "Northwestern IE" (Germanic, Celtic and Italic, compare ) from "Balkan PIE" (Graeco-Aryan-Balto-Slavic) postulates 1500 years of common evolution of Graeco-Aryan-Balto-Slavic after separation from the Northwestern dialects. This is incompatible with the Kurgan topology of the Indo-European family tree. The postulation of early "Northwestern IE" separation is thus the core claim of this scenario, without which the model would become equivalent to an extreme Indo-Hittite view with a Balkans homeland of the non-Anatolian branches.
Italic, and Anatolian Indo-European
The main strength of the farming hypothesis lies in its linking of the spread of Indo-European languages with an archaeologically known event (the spread of farming) that is often assumed as involving significant population shifts.
List of Indo-European languages - Wikipedia
While the Anatolian theory enjoyed brief support when first proposed, the community in general now rejects it, its majority clearly favouring the postulating a BC expansion from the . While the spread of farming undisputedly constituted an important event, most see no case to connect it with Indo-Europeans in particular, seeing that terms for animal husbandry tend to have much better reconstructions than terms related to agriculture. The linguistic community further notes that linguistic evidence suggests a earlier date for Proto-Indo-European than the Anatolian theory predicts.