viernes, 10 de mayo de 2013

NEW 7 WONDERS OF THE WORLD (gran muralla china)


La Gran Muralla China (chino tradicional chino simplificado Cháng Chéng, "Larga fortaleza") o (chino simplificado: ; chino tradicional: pinyin: Wànlǐ Chángchéng; literal "la larga muralla de 10.000 Li (里)")(10,000 li = 8.851,8 km. En China, 10.000 li representan el "infinito".) es una antigua fortificación china construida y reconstruida entre el siglo V a. C. y el siglo XVI para proteger la frontera norte del Imperio chino durante las sucesivas dinastías imperiales de los ataques de los nómadas xiongnu de Mongolia y Manchuria.
Contando sus ramificaciones y construcciones secundarias, se calcula que tiene 8851 kilómetros de largo, desde la frontera con Corea al borde del río Yalu hasta el desierto de Gobi a lo largo de un arco que delinea aproximadamente el borde sur de Mongolia Interior, aunque hoy sólo se conserva un 30% de ella. En promedio, mide de 6 a 7 metros de alto y de 4 a 5 metros de ancho. En su apogeo Ming, fue custodiada por más de un millón de guerreros.
La muralla fue nombrada Patrimonio de la Humanidad por la Unesco en el año 1987. Gran parte de la Gran Muralla tiene fama de ser el mayor cementerio del mundo.


File:GreatWallTower.jpg

The Great Wall of China is a series of fortifications made of stone, brick, , wood, and other materials, generally built along an east-to-west line across the historical northern borders of China in part to protect the Chinese Empire or its prototypical states against intrusions by various nomadic groups or military incursions by various warlike peoples or forces. Several walls were being built as early as the 7th century BC; these, later joined together and made bigger, stronger, and unified are now collectively referred to as the Great Wall. Especially famous is the wall built between 220–206 BC by the first Emperor of China,Qin Shi Huang. Little of that wall remains. Since then, the Great Wall has on and off been rebuilt, maintained, and enhanced; the majority of the existing wall was reconstructed during the Ming Dynasty.
Other purposes of the Great Wall have included border controls, allowing the imposition of duties on goods transported along theSilk Road, regulation or encouragement of trade and the control of immigration and emigration. Furthermore, the defensive characteristics of the Great Wall were enhanced by the construction of watch towers, troop barracks, garrison stations, signaling capabilities through the means of smoke or fire, and the fact that the path of the Great Wall also served as a transportation corridor.
The Great Wall stretches from Shanhaiguan in the east, to Lop Lake in the west, along an arc that roughly delineates the southern edge of Inner Mongolia. A comprehensive archaeological survey, using advanced technologies, has concluded that the Ming walls measure 8,850 km (5,500 mi) This is made up of 6,259 km (3,889 mi) sections of actual wall, 359 km (223 mi) of trenches and 2,232 km (1,387 mi) of natural defensive barriers such as hills and river.Another archaeological survey found that the entire wall with all of its branches measure out to be 21,196 km (13,171 mi).

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