Dee ihe na-aga n'ihu maka paragraf a - Iji were ohere nke Ferdinand na-echegbu onwe ya na Ntughari Bohemia na mmalite nke Agha Afọ Iri Atọ, Bethlen wakporo Royal Hungary nke ndị Habsburg na-achịkwa na 1618 wee merie ya kpamkpam ruo 1620. Ọ bụ ezie na e mere udo na Jenụwarị 1620 na-enye Bethlen 13 counties na ọwụwa anyanwụ Royal Hungary, nwa eze ahụ maliteghachiri agha na Septemba. Mmeri Ferdinand meriri ndị Bohemia n'Agha Ugwu Ọcha
N'ọnwa Nọvemba nyere ya ohere ilekwasị ndị agha ya anya na Bethlen, na eze ukwu ahụ nwere ike weghachite ọtụtụ Royal Hungary site na 1621. Ebe ọ bụ na Bethlen ekesaaraghị ndị Protestant ibe ya ihe onwunwe ndị a napụrụ ndị isi ndị Katọlik dị ka o kwere ha ná nkwa, ha kwụsịrị ịkwado ya. Ihe ndọghachi azụ ndị a, nakwa enweghị nkwado Bethlen site n'aka Alaeze Ukwu Ottoman, mere ka Bethlen na Ferdinand chọọ okwu na Nikolsburg.