 It also drew in external powers who held Imperial territories; Nassau-Dillenburg was a hereditary possession of the Dutch Prince of Orange, while Christian IV of Denmark was also Duke of Holstein.With France facing Spanish-financed Huguenot rebellions from 1622 to 1630, and proxy wars in Italy from 1628 to 1631, this provided opportunities to weaken the Habsburgs, but avoid direct conflict.France supported the Dutch war with Spain, as well as funding Danish, then Swedish intervention in the Empire.