Texas Austria portalHungary portalHistory portalThis category is for topics specifically related to the year 1804 in the Austrian Empire. 17991800180118021803180418051806180718081809 1750s1760s1770s1780s1790s1800s1810s1820s1830s1840s1850s Subcategories This category has only the following subcategory. / 1804 establishments in the Austrian Empire (1 C, 2 P)