Rubuta ci gaba don wannan sakin layi - Sakamakon rikice-rikicen rikice-rikicen yaƙe-yaƙe na Napoleon, Sweden ta haɗu da kanta tare da Daular Rasha, United Kingdom da sauran ɓangarorin Hadin Gwiwa na Hudu
a kan Faransa ta Napoleon. Koyaya, bin yarjejeniyar Yarjejeniyar Tilsit a cikin 1807, Rasha ta yi zaman lafiya da Faransa kuma ta bar haɗin gwiwa. Wannan ya baiwa Rasha damar kalubalantar Sweden a cikin Yakin Finnish a 1808, game da ikon Finland. A cikin Yarjejeniyar Fredrikshamn a ranar 17 ga Satumba, 1809 an tilasta wa Sweden ta ba da dukkan yankunanta a Finland, gabashin Kogin Torne, zuwa Rasha.