However, at the beginning of the decade of 70, the excess of dollar in circulation, emitted for U.S.A., compelled the American government to devaluate the currency and to abandon the commitment of conversion in gold. Nowadays, the currencies vary in function of the dollar, the gold and euro, being that this last one represents one approximately room of the reserves in foreign currency in the world and the dollar still predominates practically constituting the others two rooms. In the current globalizada economy of the countries, the finances are so important how much to the production of goods and services. The circulation of the financial capitals, in stock markets, headings of governments, banking headings, and other financial assets are each time with little barriers occupying position detached in the international finances, supported for an enormous net of information with technology that supports the flow of the globalizadas process of transcoes between the diverse financial markets mainly operated for the stock exchange and its markets of action. Today the stock market of New York answers for 40% of the global capitalizaton, having European stock markets 10% of participation and the remain mainly for the stock markets of Tokyo, Hong Kong and Xangai in China, Sydney in Australia, Seoul in the Coreia of the south and Mumbai in India. Valley to stand out the persistence of the developing countries to accumulate reserves in hard currency as the dollar, to use in case of escape of foreign capital, thus preventing crises as the one that occurred in 1997 and that it reached the emergent Asians (Tigers), Russia, Brazil and Argentina. THE WORLD-WIDE COMMERCE. In century XIX due to industrial and technological superiority that guarantee the hegemonic advantage in the international trade made with that the Britain Supreme adopted economic liberalism and defended the free commerce, therefore it withheld an enormous competitive advantage. This time was the beginning of the first globalization with the intensification of the commercial relations between the countries, that lasted until the crisis of 1930 in the American economy, known as the Great Depression of 30.