 Nyorai kupfuurira kweiyi ndima - Kupfuura kwe1854 Kansas-Nebraska Mutemo uye kutanga kwekurwisana kwechisimbapakati pemasimba anotsigira uranda neanorwisa uranda muKansas akawedzera kusawirirana kwemapoka uye akaparadzanisa mapato makuru ose ari maviri. Pierce akarambidzwa kusarudzwazve achitsigira James Buchanan, nepo bato reWhig rakaparara. Mukusarudzwa kwemutungamiri wenyika muna 1856, Buchanan akakunda John C. Frémont weRepublican Party yaipikisa uranda uye aimbova Mutungamiri Fillmore, mukwikwidzi weAmerican Party. Kunetsana pakati pemapoka akaramba achiwedzera pashure pokunge Dare Repamusorosoro ratura mutongo waro muDred Scott v. Sandford. Buchanan akaratidza kuti akanga asingakwanisi kupedza kupesana kwaiita mapoka, uye vamwe vatungamiriri vokuSouth vakatanga kutaura zvakasimba kuti vaida kubuda muUnited States. Muna 1859, Buchanan akapa Scott basa rokutungamirira boka raizogadzirisa kusawirirana neBritain pamusoro pokuva muridzi weSan Juan Islands iri kuNorthwest Pacific. Scott akasvika pachibvumirano nomukuru mukuru weBritain James Douglas chokuderedza mauto pazvitsuwa, nokudaro achigadzirisa chinonzi Hondo yeNguruve. 