The United States of America (USA), commonly referred to as the United States (US), America, or simply the States, is a federal republic consisting of 50 states, 16 territories, a federal district, and various overseas extraterritorial jurisdictions. The 48 contiguous states and the federal district of Washington, D.C., are in central North America between Canada and Mexico. The state of Alaska is the northwestern part of North America and the state of Hawaii is an archipelago in the mid-Pacific. The country also has five populated and nine unpopulated territories in the Pacific and the Caribbean. At 3.79 million square miles (9.83 million km2) in total and with around 316 million people, the United States is the fourth-largest country by total area and third largest by population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The geography and climate of the United States is also extremely diverse, and it is home to a wide variety of wildlife.
Paleo-indians migrated from Asia to what is now the US mainland around 15,000 years ago, with European colonization beginning in the 16th century. The United States emerged from 13 British colonies located along the Atlantic seaboard. Disputes between Great Britain and these colonies led to the American Revolution. On July 4, 1776, delegates from the 13 colonies unanimously issued the Declaration of Independence. The ensuing war ended in 1783 with the recognition of independence of the United States from the Kingdom of Great Britain, and was the first successful war of independence against a European colonial empire. The current Constitution was adopted on September 17, 1787. The first 10 amendments, collectively named the Bill of Rights, were ratified in 1791 and guarantee many fundamental civil rights and freedoms.
The peso is the currency of Chile. The current peso has circulated since 1975, with a previous version circulating between 1817 and 1960. The symbol used locally for it is $. The ISO 4217 code for the present peso is CLP. It is subdivided into 100 centavos, although no centavo denominated coins remain in circulation. The average exchange rate of the Chilean peso to the U.S dollar was 1 U.S. dollar to 472.34 Chilean pesos in February 2013.
The first Chilean peso was introduced in 1817, at a value of 8 Spanish colonial reales. Until 1851, the peso was subdivided into 8 reales, with the escudo worth 2 pesos. In 1835, copper coins denominated in centavos were introduced but it was not until 1851 that the real and escudo denominations ceased to be issued and further issues in centavos and décimos (worth 10 centavos) commenced. Also in 1851, the peso was set equal 5 French francs on the silver standard, 22.5 grams pure silver. However, gold coins were issued to a different standard to that of France, with 1 peso = 1.37 grams gold (5 francs equalled 1.45 grams gold). In 1885, a gold standard was adopted, pegging the peso to the British pound at a rate of 13⅓ pesos = 1 pound (1 peso = 1 shilling 6 pence). This was reduced in 1926 to 40 pesos = 1 pound (1 peso = 6 pence). From 1925, coins and banknotes were issued denominated in cóndores, worth 10 pesos. The gold standard was suspended in 1932 and the peso's value fell further. The escudo replaced the peso on 1 January 1960 at a rate 1 escudo = 1000 pesos.
The peso (sign: $; code: MXN) is the currency of Mexico. Modern peso and dollar currencies have a common origin in the 15th–19th century Spanish dollar, most continuing to use its sign, "$". The Mexican peso is the 13th most traded currency in the world, the third most traded in the Americas, and the most traded currency in Latin America.
The current ISO 4217 code for the peso is MXN; prior to the 1993 revaluation (see below), the code MXP was used. The peso is subdivided into 100 centavos, represented by "¢". As of January 4, 2013, the peso's exchange rate was $16.5914 per euro and $12.7597 per U.S. dollar 
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The peso (originally established as the peso convertible) is the currency of Argentina, identified by the symbol $ preceding the amount in the same way as many countries using dollar currencies. It is subdivided into 100 centavos. Its ISO 4217 code is ARS. Several earlier currencies of Argentina were also called "peso"; as inflation progressed a new currency with a few zeroes dropped and a different qualifier (peso national currency, peso law 18188, peso argentino...) was introduced. Since 1969 thirteen zeroes have been dropped (a factor of ten trillion).
The real de a ocho (also known as the piece of eight (peso de ocho), the Spanish dollar or the eight-real coin) is a silver coin, of approximately 38 mm diameter, worth eight reales, that was minted in the Spanish Empire after a Spanish currency reform in 1497. Its purpose was to correspond to the German thaler.
The Spanish dollar was widely used by many countries as international currency because of its uniformity in standard and milling characteristics. Some countries countersigned the Spanish dollar so it could be used as their local currency.
The United States dollar (sign: $; code: USD; also abbreviated US$), is referred to as the U.S. dollar or American dollar. It is the official currency of the United States and its overseas territories. It is divided into 100 smaller units called cents.
A currency sign is a graphic symbol used as a shorthand for a currency's name, especially in reference to amounts of money. They typically employ the first letter or character of the currency, sometimes with minor changes such as ligatures or overlaid vertical or horizontal bars. Today, ISO 4217 codes are used instead of currency signs for most official purposes,]citation needed[ though currency signs may be in common use in many other contexts. Few currencies in the world have no shorthand symbol at all.
Although many former currency signs were rendered obsolete by the adoption of the euro, having a new and unique currency sign — implementation of which requires the adoption of new unicode and type formats — has now become a status symbol for international currencies. The European Commission considers the global recognition of the euro sign € part of its success. In 2009, India launched a public competition to replace the ₨ ligature it shared with neighboring countries. It finalized its new currency symbol, ₹ () on 15 July 2010. It is a blend of the Latin letter 'R' with the Devanagari letter "र" (ra).