Antioquia is one of the 32 departments of Colombia, located in the central northwestern part of Colombia with a narrow section that borders the Caribbean Sea. Most of its territory is mountainous with some valleys, much of which is part of the Andes mountain range. Antioquia has been part of many territorial divisions of former countries created within the present-day territory of Colombia. Before the adoption of the Colombian Constitution of 1886, Antioquia State had a sovereign government.