The border of Asia with Europe is a historical and cultural construct, as there is no clear physical and geographical separation between them.
ðə bˈoːɹdɚɹ ʌv ˈeɪʒə wɪð jˈʊɹɹəp ɪz ɐ hɪstˈɔːɹɪkəl ænd kˈʌltʃɚɹəl kˈɑːnstɹʌkt, æz ðɛɹ ɪz nˈoʊ klˈɪɹ fˈɪzɪkəl ænd dʒˌɪəɡɹˈæfɪkəl sˌɛpɚɹˈeɪʃən bᵻtwˈiːn ðˌɛm.