Mexico is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of Mexico. Mexico has one of the world's largest economies, and is considered both a regional power and middle power. Mexico's media were traditionally dominated by the Televisa group, which had firm links with the PRI. But the loosening of the PRI's hold led to greater editorial independence and the emergence of competitors. Mexican newspapers reflect different political views; sensationalism characterises the biggest-selling dailies.