The US issued paper currency for the first time, known as greenbacks—printed in green on the reverse side.
ðə jˌuːˈɛs ˈɪʃuːd pˈeɪpɚ kˈɜːɹənsi fɚðə fˈɜːst tˈaɪm, nˈoʊn æz ɡɹˈiːnbæks—pɹˈɪntᵻd ɪn ɡɹˈiːn ɔnðə ɹᵻvˈɜːs sˈaɪd.