Rubuta ci gaba don wannan sakin layi - A lokacin Yakin Shekaru talatin, Sweden ta yi nasarar cinye kusan rabin jihohin memba na Daular Roman Mai Tsarki. Yaƙin ya ci gaba da sauyawa sau da yawa. Bayan shan kashi a cikin yakin Nördlingen (1634)
, amincewa da Sweden a cikin jihohin Jamus da Sweden ke sarrafawa ya lalace, kuma da yawa daga cikin lardunan sun ƙi ƙarin taimakon soja na Sweden, suna barin Sweden tare da lardunan arewacin Jamus kawai. Bayan da Faransa ta shiga tsakani a bangaren Sweden, al'amura suka sake canzawa. Yayin da yaƙin ya ci gaba, yawan fararen hula da sojoji da suka mutu ya ƙaru, kuma sa'ad da ya ƙare, ya kai ga ƙarancin jama'a a jihohin Jamus. Kodayake ba a sami cikakken ƙididdigar yawan jama'a ba, masana tarihi sun kiyasta cewa yawan mutanen Daular Roman Mai Tsarki ya ragu da kashi ɗaya bisa uku sakamakon yaƙin.