Mezue ahịrịokwu na-esonụ: Ọ bụ ezie na mkparịta ụka udo ahụ nọ na-aga n'ihu, ihe ndị na-eme n'ebe ndị ọzọ na Europe akwụsịghị. Ka Spain nọ na-alụ agha Mantuan, ndị Sweden tinyere aka n'Agha Afọ Iri Atọ ahụ a lụrụ na Germany n'okpuru Gustavus Adolphus na 1630, site n'enyemaka nke France na Netherlands. Ndị Sweden jiri usoro ndị agha ọhụrụ nke Dutch (nke e ji usoro ndị agha ịnyịnya ka mma mee ka ọ dịkwuo mma) jiri ihe ịga nke ọma karịa ndị agha Imperialist karịa ndị Protestant German mere ma si otú a nweta ọtụtụ ihe ịga nke ọma dị mkpa, na-agbanwe ọnọdụ agha ahụ. Otú ọ dị, ozugbo agha ya na Ịtali biri na 1631, Spain nwere ike iwulite ndị agha ya n'ebe ugwu agha ahụ ọzọ. The Cardinal-Infante ada a ike agha elu, site na ụzọ nke Spanish Road, na na
Agha nke Nördlingen (1634) ndị agha a, jikọtara ya na ndị agha Imperialist, na-eji usoro ọdịnala Spanish tercio eme ihe, meriri ndị Sweden. Mgbe ahụ, ọ gara ozugbo na Brussels, ebe ọ nọchiri agadi Infanta Isabella bụ́ onye nwụrụ na December 1633. Ike Spain nwere n'ebe ndịda Netherlands bịara sikwuo ike.