Mbere y'icyo gihe, Iceland yari ifitanye isano ya politiki na Denmark nubwo yari yarahawe uburenganzira bwo kwiyobora kuva mu 1918. Icyakora, Umwami wa Denmark ni we wakomezaga kuba Umukuru w'Igihugu cya Iceland.
Ibi byaje guhinduka cyane mu gihe cy'Intambara ya Kabiri y'Isi Yose, ubwo Denmark yafatwaga n'ingabo z'u Budage mu 1940. Kubera uko ibintu byari byifashe, Iceland yatangiye kwicungira byinshi mu bikorwa byayo bya buri munsi, bituma abaturage benshi barushaho gushyigikira igitekerezo cyo kwigenga burundu.
Mu kwezi kwa Gicurasi 1944, habaye kamarampaka aho abaturage bagaragaje ku bwinshi ko bashaka ko igihugu cyabo kiba Repubulika kandi kigasesa umubano wa cyami na Denmark.
Nyuma y'icyo cyemezo, ku wa 17 Kamena 1944, hatangajwe ku mugaragaro ko Iceland ibaye Repubulika yigenga. Uwo munsi kandi, Sveinn Björnsson yarahiriye kuyobora igihugu nka Perezida wa mbere wa Repubulika ya Iceland.
Kuva icyo gihe, Iceland yagiye itera imbere mu nzego zitandukanye zirimo ubukungu, uburezi, ikoranabuhanga ndetse no kubyaza umusaruro ingufu kamere. Kuri ubu ifatwa nk'imwe mu bihugu bifite imibereho myiza ku rwego rw'isi.
Buri mwaka, tariki ya 17 Kamena, abaturage ba Iceland bizihiza Umunsi w'Ubwigenge bibuka umunsi igihugu cyabo cyavuye ku buyobozi bw'ubwami bwa Denmark kikinjira mu bihe bishya bya Repubulika yigenga.
Uyu munsi, imyaka 82 irashize Iceland itangaje ubwigenge busesuye ndetse igatangira urugendo rushya rwo kwiyubaka nk'igihugu cyigenga.