There were more signs that the U.S. economy was improving, as a string  of positive data was released yesterday from the U.S. the most  significant was the Chicago PMI, which printed higher-than- expected  figures in the month of August. This indicator is a primary gauge of  manufacturing sector, acting as the main driver of the U.S. economy. On  top of this good news, a rise in demand for U.S. goods from abroad is  also likely to help boost the U.S. economy in the coming months.