Céntimo is one-hundredth of the following basic monetary units: Céntimo The céntimo (in Spanish-speaking countries) or cêntimo (in Portuguese-speaking countries) was a currency unit of Spain, Portugal and their former colonies. The word derived from the Latin meaning "hundredth part". The main Spanish currency, before the euro, was the peseta which was divided into 100 céntimos. In Portugal it was the real and later the escudo, until it was also replaced by the euro. In the European community "cent" is the official name for one hundredth of a euro. However, both "céntimo" (in Spanish) and "cêntimo" (in Portuguese) are commonly used
Optimum currency area rationale behind the creation of the euro is that the individual countries of Europe do not each form an optimal currency area, but that Europe as a whole does. The creation of the euro is often cited because it provides the most modern and largest-scale case study of an attempt to identify an optimum currency area, and provides a comparative before-and-after model by which to test the principles of the theory. In theory, an optimal currency area could also be smaller than a country. Some economists have argued that the United States, for example, has some regions that do not