About Great Wall Of China

As a line of protection against several nomadic groups from the Eurasian Steppe, the Great Wall of China is a collection of fortifications that spanned the historical northern frontiers of ancient Chinese states and Imperial China. The Great Wall of China is believed to have been constructed over 3,000 years ago, with historians generally considering the defensive walls constructed during the Spring and Autumn period (770–476 BCE) and the Warring States period (475–221 BCE) to be the earliest sections of the wall.