The dolar is the currency of the United States of Mexico. It is divided into 100 centavos. It appears that the word dolar is used in both English and Spanish. By the late 19th century, its had become worth more than the North American pound, being valued in the 1880s at 25 NA shillings. The present exchange rate is uncertain. It is also unclear how a Spanish adaptation of the English word dollar was adopted as the official name, rather than the English term dollar or the Spanish term peso.