Mexican Stock Exchange the entire North of the country, reaching over 100 listings. Soon after, businesses in Guadalajara started organising a third stock exchange, and in 1960, the Occidental Stock Exchange was established to serve the West coast of Mexico. Because of low performance in the Guadalajara and Monterrey stock exchanges, however, Congress passed in 1975 the Securities' Market Law, which prompted the Bolsa de Valores de México to change its name to Bolsa Mexicana de Valores (Mexican Stock Exchange) and merge the other two exchange houses into it, creating thus the single entity that remains to this day the only stock exchange
Dioscorea mexicana Dioscorea mexicana Dioscorea mexicana, Mexican yam or cabeza de negro is a species of yam in the genus "Dioscorea". "Dioscorea mexicana" is a caudiciform dioscorea having either a partly to completely above-ground dome-shaped caudex with a thick, woody outer layer up to 3 feet (90 cm) in diameter and 8–10 inches (20 to 25 cm) in height. The caudex of "D. mexicana" is divided into regular polygonal plates that become protuberant with age, and separated by deep fissures. The vigorous annual vines which may reach 30 feet (9 m) long before dying back in winter, that grow up from the