 The 1830s and 1840s saw romantic nationalism inspire the Croatian National Revival, a political and cultural campaign advocating the unity of all South Slavs in the empire.Its primary focus was the establishment of a standard language as a counterweight to Hungarian, along with the promotion of Croatian literature and culture.During the Hungarian Revolution of 1848 Croatia sided with the Austrians, Ban Josip Jelačić helping defeat the Hungarian forces in 1849, and ushering a period of Germanization policy.