WORLD HISTORY

Detailed explanation-1: -The Great Wall safeguarded the central plain of Mainland China in history and successfully kept out invasions from various northern nomadic tribes including the Huns in the Qin and Han Dynasties, the Turks in the Sui Dynasty, the Khitan in the Song Dynasty, and the Tatar, Oirat and Jurchen in the Ming Dynasty.

Detailed explanation-2: -As an artificial physical barrier, the Great Wall could be an excellent model for studying its effect on the genetic differentiation of plant populations around it.

Detailed explanation-3: -The Great Wall of China was built to protect China from its enemies and invaders from the North, especially the Mongols. The Mongols were a tribal group that would regularly conduct raids into China. Despite the wall, the Mongols eventually conquered China. The Wall also kept Chinese citizens from leaving China.

Detailed explanation-4: -It is 2900 kilometres long, 22 feet high and 20 feet wide with watch towers at intervals. It has 10, 000 towers.It was built by the Chinese ruler Shi-Hwang-ti to prevent an invasion by Tartars.

Detailed explanation-5: -No wonder they call it the Great Wall. Why did they build the wall? The wall was built to help keep out northern invaders like the Mongols. Smaller walls had been built over the years, but the first Emperor of China, Qin Shi Huang, decided that he wanted a single giant wall to protect his northern borders.