Texas Biography portalHistory portal See also: Category:Lists of state leaders by year See also: Category:Monarchs See also: Category:Kings See also: Category:Emperors Subcategories This category has the following 13 subcategories, out of 13 total. * Monarchs by century (58 C) Women rulers by century (11 C)0–9 11th-century rulers (3 C, 5 P) 12th-century rulers (3 C, 3 P) 13th-century rulers (3 C, 4 P) 14th-century rulers (4 C, 1 P) 15th-century rulers (4 C, 1 P) 16th-century rulers (4 C, 1 P) 17th-century rulers (4 C, 2 P) 18th-century rulers (4 C, 2 P) 19th-century rulers (6 C, 4 P) 20th-century rulers (9 C, 5 P) 21st-century rulers (7 C, 2 P)