Original sentence: The Indo-European languages are a family (or phylum) of several hundred related languages and dialects, including most major languages of Europe, Iran, and   India, and historically also predominant in Anatolia and Central Asia
Edited sentence: The Indo-European languages are a family (or phylum) of several hundred related languages and dialects, including most major languages of Europe, Iran, and northern India, and historically also predominant in Anatolia and Central Asia