The Scots-Irish were the largest non-English immigrant group from the British Isles before the American Revolution, and many settled in the South, later moving into the Deep South as it was developed.
ðə skˈɑːtsˈaɪɹɪʃ wɜː ðə lˈɑːɹdʒɪst nˈɑːnˈɪŋɡlɪʃ ˈɪmɪɡɹənt ɡɹˈuːp fɹʌmðə bɹˈɪɾɪʃ ˈaɪəlz bᵻfˌoːɹ ðɪ ɐmˈɛɹɪkən ɹˌɛvəlˈuːʃən, ænd mˈɛni sˈɛɾəld ɪnðə sˈaʊθ, lˈeɪɾɚ mˈuːvɪŋ ˌɪntʊ ðə dˈiːp sˈaʊθ æz ɪt wʌz dɪvˈɛləpt.