Great Wall of China the optics much better, rendering photographic evidence irrelevant to the issue of whether it is visible to the naked eye. Great Wall of China The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China to protect the Chinese states and empires against the raids and invasions of the various nomadic groups of the Eurasian Steppe with an eye to expansion. Several walls were being built as early as the 7th century BC; these, later joined together and
History of the Great Wall of China the Shanhai Pass, proved popular destinations for these wall watchers. The travelogues of the later 19th century in turn further contributed to the elaboration and propagation of the Great Wall myth. Examples of this myth's growth are the false but widespread belief that the Great Wall of China is visible from the Moon or Mars. The Xinhai Revolution in 1911 forced the abdication of the last Qing Emperor Puyi and ended China's last imperial dynasty. The revolutionaries, headed by Sun Yat-sen, were concerned with creating a modern sense of national identity in the chaotic post-imperial era. In contrast to Chinese