Mexico United Mexican States and also referred to as the United States of Mexico , is a federalconstitutional 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 theCaribbean Sea; and on the east by the Gulf of Mexico. Covering almost two million square kilometres (over 760,000 sq mi), Mexico is the fifth largest country in the Americas by total area and the 13th largest independent nation in the world. With an estimated population of over 113 million, it is the eleventh most populous and the most populous Spanish-speakingcountry in the world and the second most populous country in Latin America. Mexico is a federation comprising thirty-one states and a Federal District, the capital city.
In pre-Columbian Mexico many cultures matured into advanced civilizations such as theOlmec, the Toltec, the Teotihuacan, the Zapotec, the Maya and the Aztec before first contact with Europeans. In 1521, the Spanish Empire conquered and colonized the territory from its base in México Tenochtitlan, which was administered as the Viceroyalty of New Spain. This territory would eventually become Mexico following recognition of the colony's independence in 1821. The post-independence period was characterized by economic instability, the Mexican-American War that led to the territorial cession to the United States, the Pastry War, theFranco-Mexican War, a civil war, two empires and a domestic dictatorship. The latter led to theMexican Revolution in 1910, which culminated with the promulgation of the 1917 Constitutionand the emergence of the country's current political system. On march of 1938, the Mexican oil expropriation was declared by the government, nationalizing the U.S. and Anglo-Dutch oil company known as the Mexican Eagle Petroleum Company. This movement would result in the creation of the state-owned Mexican oil company known as Pemex. Since then, the company have played an important role in the economical development of Mexico.
Mexico has one of the world's largest economies, it is the tenth largest oil producer in the world, the largest silver producer in the world and is considered both a regional power andmiddle power. In addition, Mexico was the first Latin American member of theOrganisation for Economic Co-operation and Development OECD (since 1994), and considered an upper-middle income country by the World Bank. Mexico is considered anewly industrialized country and an emerging power. It has the fourteenth largest nominal GDP and the tenth largest GDP by purchasing power parity. The economy is strongly linked to those of its North American Free Trade Agreement (NAFTA) partners, especially the United States of America. Mexico ranks sixth in the world and first in the Americas by number of UNESCO World Heritage Sites with 32, and in 2010 was the tenth most visited country in the world with 22.5 million international arrivals per year.According to Goldman Sachs, by 2050 Mexico is expected to become the world's fifth largest economy. PricewaterhouseCoopers (PwC) estimated in January 2013 that by 2050 Mexico could be the world's seventh largest economy.