Texas Law portal This category is for laws and constitutions enacted, court cases decided, crimes committed, legal treatises written, and treaties concluded or entered into force in the year 1800. 17951796179717981799180018011802180318041805 1750s1760s1770s1780s1790s1800s1810s1820s1830s1840s1850s Subcategories This category has the following 8 subcategories, out of 8 total. A 1800 in American law (3 C, 3 P)B 1800 in British law (1 C, 1 P)C 1800 in case law (1 C) Courts and tribunals disestablished in 1800 (1 P) Courts and tribunals established in 1800 (2 P) 1800 crimes (3 C)R 1800 referendums (1 P)T 1800 treaties (5 P)