What happens in a currency exchange market?

How can government regulations be good for production? How much money should be in Monopoly? How does real GDP affect unemployment rate? Singapore command economy? Which type of economic system do you think consumers (like you) would like the most? Why did the gin lead to slaves becoming more valuable than without the cotton gin? Why is it important for companies to build good relationships with business in the tertiary sector? What are the chief economic activities in Canada? What is the least efficient sector of the US economy and why? When did most countries including the US switch to gross domestic product method of calculating the nation's economic health? Why is water considered a scarce resource? How much is the 1957 wheat penny actually worth? Why have the 500 euro banknotes been withdrawn from circulation? What is the value of a 1952 wheat back penny? Is Hawala a part of Islamic Banking? Which profitable crop pushed owners to work their slaves very hard under difficult time and weather conditions? Why do farmers use intensive farming methods? Why is the market economic system used in the United States? Is the U.S. is capitalist or a socialist country? What is the basic farm problem?