Lincoln demanded that Polk show Congress the exact spot on which blood had been shed and prove that the spot was on American soil.
lˈɪŋkən dᵻmˈændᵻd ðæt pˈɑːlk ʃˈoʊ kˈɑːŋɡɹəs ðɪ ɛɡzˈækt spˈɑːt ˌɔn wˌɪtʃ blˈʌd hɐdbɪn ʃˈɛd ænd pɹˈuːv ðætðə spˈɑːt wʌz ˌɔn ɐmˈɛɹɪkən sˈɔɪl.