Rubuta ci gaba don wannan sakin layi - A China, duk da cewa ba ta shiga kai tsaye a Yaƙin Opium na Biyu ba
, Gwamnatin Buchanan ta sami damar cinikayya. Shugaban ya dogara da William Bradford Reed (1806<unk>1876) Ministansa zuwa China a 1857<unk>58. Tsohon Whig, Reed ya shawo kan tsofaffin Whigs don tallafawa Buchanan a cikin yakin 1856. Yarjejeniyar Tientsin (1858) ta ba wa jami'an diflomasiyyar Amurka damar zama a Beijing, ta rage yawan haraji ga kayayyakin Amurka, kuma ta ba da tabbacin 'yancin yin addini ga baƙi a China. Reed ya bunkasa wasu daga cikin tushen Manufofin Bude Kofa wanda ya haifar da shekaru 40 daga baya.