Ka cika wannan magana: A lokacin Yaƙin Shekara talatin, Sweden ta ci kusan rabin ƙasashen Roma Mai Tsarki. Gustav Adolphus ya shirya ya zama sabon Sarkin sarakuna na Romawa Mai Tsarki, yana mulki a kan Scandinavia da kuma jihohin Romawa Mai Tsarki, amma ya mutu a yakin Lützen a shekara ta 1632. Bayan da
Yaƙin Nördlingen, babban nasarar da Sweden ta yi a yaƙin, jin daɗin Sweden a tsakanin jihohin Jamus ya ɓace. Wadannan lardunan Jamus sun cire kansu daga ikon Sweden daya bayan daya, suna barin Sweden tare da wasu yankuna na arewacin Jamus: Swedish Pomerania, Bremen-Verden da Wismar. Sojojin Sweden sun iya lalata har zuwa 2,000 castles, ƙauyuka 18,000 da garuruwa 1,500 a Jamus, kashi ɗaya bisa uku na dukan garuruwan Jamus.