GUERRERO, a Pacific coast State of Mexico, bounded north-west by Michoacan, north by Mexico (State) and Morelos, north-east and east by Puebla and Oaxaca, and south and west by the Pacific. Area, 24,885 sq. miles. Pop., largely composed of Indians and mestizos (1930), 641,690. The State is roughly broken by the Sierra Madre del Sur and its spurs, which cover its entire surface with the exception of the low coastal plain (averaging about 2om. in width) on the Pacific. The valleys are usually narrow, fertile and heavily forested, but difficult of access. The State is divided into two distinct zones—the tierras calientes of the coast and lower river courses where tropical conditions prevail, and the tierras templadas of the mountain region where the condi tions are sub-tropical. The latter is celebrated for its agreeable and healthy climate, and for the variety and character of its prod ucts. The principal river of the State is the Rio de las Balsas or Mescala, which, having its source in Tlaxcala, flows entirely across the State from west to east, and then southward to the Pacific on the frontier of Michoacan. This river is 429m. long and receives many affluents from the mountainous region through which it passes, but its course is very precipitous and its mouth obstructed by sand bars. The agricultural products include cotton, coffee, tobacco and cereals, and the forests produce rubber, vanilla and various textile fibres. Mining is undeveloped, although the mineral resources of the State include silver, gold, mercury, lead, iron, coal, sulphur and precious stones. The capital, Chilpancingo or Chil pancingo de los Bravos (pop. [1921] 5 ,95 5) , is a small town in the Sierra Madre about nom. om. from the coast and 200m. S. of the Federal capital. It is a well-built town on the old Acapulco road, and is celebrated in the history of Mexico as the meeting-place of the revolutionary congress of 1813, which issued a declaration of independence. Chilpancingo was badly damaged by an earth quake in January 1902 and 1907. Other important towns are Tixtla de Guerrero, formerly the capital (pop. [1921] 5,512), 3m. N.E. of Chilpancingo; Chilapa (pop. [1921] 7,510), Iguala (pop. [1921] 10,855) and Acapulco (q.v.).