Two years later there appeared the Rasmus Rask, completed in 1814.
This work demonstrated methodically the relation of Germanic to Latin, Greek, Slavic, and Baltic.
Indo-Hittite is used by scholars who believe that Hittite and the other Anatolian languages are not just one branch of Indo-European but rather a branch coordinate with all the rest put together; thus, Indo-Hittite has been used for a family consisting of Indo-European proper plus Anatolian.
As long as this view is neither definitively proved nor disproved, it is convenient to keep the traditional use of the term Indo-European.
One group of travel permits for caravans can be dated to the early 7th century, and it appears that other texts date from the same or from neighbouring centuries.
These languages became known to scholars only in the first decade of the 20th century.
The difference between Gothic By comparing the recorded Indo-European languages, especially the most ancient ones, much of the parent language from which they are descended can be reconstructed.
The oldest Hittite texts date from the 17th century .
The Indo-European character of Tocharian was announced by the German scholars Bedřich Hrozný published the first report of his own decipherment of the much more copious material that had meanwhile been found in the ruins of the Hittite capital itself.
The first full comparative grammar of the major Indo-European languages was Bopp’s (1861–62; “Compendium of the Comparative Grammar of the Indo-European Languages”) were rendered obsolete by the major breakthrough of the 1870s, when scholars—prompted largely by the discoveries of a group of German scholars known as Neogrammarians—realized that sound correspondences are not merely rules of thumb that do not have to be strictly observed, but that apparent exceptions to sound laws can often be accounted for by stating them more accurately or by reconstructing additional different sounds in the parent language.
The sound changes implied by these correspondences have become known as Heinrich Hübschmann, showed that Armenian was an independent branch of Indo-European, rather than a member of the Iranian subbranch.
Since then the Indo-European family has been enlarged by the discovery of Tocharian languages and of Hittite and the other Anatolian languages and by the recognition, with the aid of Hittite, that Lycian, known and partly deciphered already in the 19th century, belongs to the Anatolian branch of Indo-European.
The massive similarities between Sanskrit and Latin and Greek were noted early, but the first person to make the correct inference and state it conspicuously was the British Orientalist and jurist a stronger affinity, both in the roots of verbs, and in the forms of grammar, than could possibly have been produced by accident; so strong, indeed, that no philologer could examine them all three, without believing them to have sprung from some common source, which, perhaps, no longer exists.