Although linguists have been able to allocate most languages to a small number of language "families", they have been unable to find a common origin of these language families. A few of the largest and oldest families include: [[Indo-European]], Afro-Asiatic and Nigar Congo families (Campbell, 98). | Although linguists have been able to allocate most languages to a small number of language "families", they have been unable to find a common origin of these language families. A few of the largest and oldest families include: [[Indo-European]], Afro-Asiatic and Nigar Congo families (Campbell, 98). |