People of Irish descent are the second largest self-reported ethnic group in the United States, after German Americans. Nine of the signatories of the American Declaration of Independence were of Irish origin.eople of Irish descent are found mainly in English-speaking countries; especially Great Britain, the United States, Canada and Australia. There are also significant numbers in Argentina and Mexico.
Despite its long history, the Great Wall of China as it is exists today was constructed mainly during the mighty Ming dynasty (1368-1644). Like the Mongols, the early Ming rulers had little interest in building border fortifications, and wall building was limited before the late 15th century.
The history of the Great Wall of China began when fortifications built by various states during the Spring and Autumn (771â476 BC) and Warring States periods (475â221 BC) were connected by the first emperor of China, Qin Shi Huang, to protect his newly founded Qin dynasty (221â206 BC) against incursions by nomads from Inner Asia.