These civilizations may well have exchanged technologies and ideas such as mathematics and the wheel.
ðiːz sˌɪvɪlᵻzˈeɪʃənz mˈeɪ wˈɛl hæv ɛkstʃˈeɪndʒd tɛknˈɑːlədʒiz ænd aɪdˈiəz sˈʌtʃ ɐz mˌæθɪmˈæɾɪks ænd ðə wˈiːl.