Americans of German-descent top the list of U.S. ethnic groups, followed by Irish, 35.8 million; Mexican, 31.8 million; English, 27.4 million; and Italian, 17.6 million, analysis of Census and American Community Survey data shows.mid the surge of Hispanics, the largest ethnic group in the U.S. is still German-Americans, with a population of 49.8 million, a jump of 6 million between 2000 and 2010.
Great Wall History. The history of the Great Wall is said to have started from the Spring and Autumn Period (770 - 476 BC). Over the following 2,000 years, more than 20 states and dynasties played a part in its construction. The accumulative length of the wall exceeds 31,069 miles (50,000 km). Zhou Dynasty (1046 - 256 BC)
The Great Wall of China was built over more than two thousand years. Construction on the first section began between the 7th and 6th century BC, and the last work on the wall was done between the 14th and 17th centuries.he Great Wall of China was built over more than two thousand years. Construction on the first section began between the 7th and 6th century BC, and the last work on the wall was done between the 14th and 17th centuries.