[File:Indo-European branches map.svg|thumb|300px|The approximate present-day distribution of the Indo-European branches within their homelands of Europe and Asia: Dotted/striped areas indicate where multilingualism is common.]] The Indo-European languages include some 439 (SIL estimate) languages and dialects spoken by about three billion people, including most of the major language families of Europe and western Asia, which belong to a single superfamily. Each subfamily in this list contains many subgroups and individual languages.