WORLD HISTORY

Detailed explanation-1: -The Great Wall was originally conceived by Emperor Qin Shi Huang in the third century BCE as a means of preventing incursions from barbarian nomads. Today it is a powerful symbol of the Chinese civilisation’s enduring strength.

Detailed explanation-2: -Of these walls, those of the northern states Yan, Zhao, and Qin were connected by Qin Shi Huang when he united the Chinese states in 221 BC. The walls, known as Changcheng () – literally “long walls", but often translated as “Great Wall” – were mostly constructed of tamped earth, with some parts built with stones.

Detailed explanation-3: -The rammed earth method is a technique of building walls by compressing the raw materials such as earth, gravel and lime into the shape of a wall. The construction materials that they used to construct the Great Wall were mainly fire kiln bricks and mud bricks.

Detailed explanation-4: -The Great Wall of the Qin Dynasty starts at Lintao (Min County, Gansu Province) and ends at the east of Liaoning Province, stretching for over 5, 000 kilometers (3, 107 miles).