Legal anthropology or anthropology of law specializes in "the cross-cultural study of social ordering".
lˈiːɡəl ˌænθɹəpˈɑːlədʒi ɔːɹ ˌænθɹəpˈɑːlədʒi ʌv lˈɔː spˈɛʃəlˌaɪzᵻz ˈɪn "ðə kɹˈɔskˈʌltʃɚɹəl stˈʌdi ʌv sˈoʊʃəl ˈɔːɹdɚɹɪŋ".