China, with an area of 9.6 million sq km, is the third largest country in the world, next only to Russia and Canada. Located in eastern Asia, China is bordered by Russia and Mongolia to the north; Russia and North Korea to the east; Russia and Afghanistan to the west; and India, Pakistan, Nepal,...

The Great Wall of China was erected over many millenia, starting with the first sections which were piecemeal fortifications erected by individual kingdoms between the 7th and 5th centuries B.C., all the way up to the final portions which were added in the 14th to 17th centuries A.D. The individual defensive walls of the...