text_original: For twelve years the threat of disunion had been in the mouths of the Southern slavery extremists and their Northern allies the most potent and formidable weapon of national politics.
text_transcription: FOR TWELVE YEARS THE THREAT OF DISUNION HAD BEEN IN THE MOUTHS OF THE SOUTHERN SLAVERY EXTREMEST IN THEIR NORTHERN ALLIES THE MOST POTENT AND FORMIDABLE WEAPON OF NATIONAL POLITICS
phonemes: fɔːɹ twˈɛlv jˈɪɹz ðə θɹˈɛt ʌv dɪsjˈuːniən hɐdbɪn ɪnðə mˈaʊðz ʌvðə sˈʌðɚn slˈeɪvɚɹi ɛkstɹˈiːmɪsts ænd ðɛɹ nˈɔːɹðɚn ˈælaɪz ðə mˈoʊst pˈoʊtənt ænd fɔːɹmˈɪdəbəl wˈɛpən ʌv nˈæʃənəl pˈɑːlətˌɪks.