Trade with the northeastern tribes by the Ohio River began during the Burial Mound Period (1000BCE700CE) and continued until European contact.
tɹˈeɪd wɪððə nˈɔːɹθiːstɚn tɹˈaɪbz baɪ ðɪ oʊhˈaɪoʊ ɹˈɪvɚ bɪɡˈæn dˈʊɹɹɪŋ ðə bˈɛɹɪəl mˈaʊnd pˈiəɹɪəd wˈʌn θˈaʊzənd bˌiːsˌiːˈiː sˈɛvənhˈʌndɹɪd sˌiːˈiː ænd kəntˈɪnjuːd ʌntˈɪl jˌʊɹɹəpˈiən kˈɑːntækt.