Ka cika wannan jumla: Tashin kishin kasa na Irish, da kuma jayayya a cikin Ireland game da sharuddan Irish Home Rule, ya haifar da rarraba tsibirin a 1921. Irish Free State ta zama mai zaman kanta, da farko tare da matsayin Dominion a 1922, kuma ba tare da wata ma'ana ba a 1931. Arewacin Ireland ya kasance wani ɓangare na Ƙasar Ingila. Dokar 1928 ta fadada kuri'a ta hanyar ba mata daidaito na zabe tare da maza. Wani raƙuman ruwa a tsakiyar shekarun 1920 ya ƙare a cikin
Janar yajin aiki na 1926. Har yanzu Birtaniya ba ta farfado ba daga sakamakon yakin lokacin da Babban Mawuyacin hali (1929<unk>1932) ya faru. Wannan ya haifar da rashin aikin yi da wahala a tsoffin yankunan masana'antu, da kuma rikice-rikicen siyasa da zamantakewa a cikin shekarun 1930, tare da haɓaka membobin jam'iyyun kwaminisanci da na gurguzu. An kafa gwamnatin haɗin gwiwa a 1931.