<P> After the atrocities committed in Bohemia , Saxony finally gave its support to the union and decided to fight back . Sweden , at the time a rising military power , soon intervened in 1630 under its king Gustavus Adolphus , transforming what had been simply the Emperor 's attempt to curb the Protestant states into a full - scale war in Europe . Spain , wishing to finally crush the Dutch rebels in the Netherlands and the Dutch Republic , intervened under the pretext of helping its dynastic Habsburg ally , Austria . No longer able to tolerate the encirclement of two major Habsburg powers on its borders , Catholic France entered the coalition on the side of the Protestants in order to counter the Habsburgs . </P>
<P> After the atrocities committed in Bohemia , Saxony finally gave its support to the union and decided to fight back . Sweden , at the time a rising military power , soon intervened in 1630 under its king Gustavus Adolphus , transforming what had been simply the Emperor 's attempt to curb the Protestant states into a full - scale war in Europe . Spain , wishing to finally crush the Dutch rebels in the Netherlands and the Dutch Republic , intervened under the pretext of helping its dynastic Habsburg ally , Austria . No longer able to tolerate the encirclement of two major Habsburg powers on its borders , Catholic France entered the coalition on the side of the Protestants in order to counter the Habsburgs . </P>
who did france support in the 30 years war
who did france support in the 30 years war
Protestants
Protestants