GENERAL KNOWLEDGE

Detailed explanation-1: -Historians usually consider the defensive walls built during the Spring and Autumn period (770–476 BCE) and the Warring States period (475–221 BCE) to be the first sections of what would eventually become the structure known as the Great Wall of China, putting the wall at almost 3, 000 years old.

Detailed explanation-2: -Made mostly of earth and stone, the wall stretched from the China Sea port of Shanhaiguan over 3, 000 miles west into Gansu province.

Detailed explanation-3: -The Great Wall of China was constructed from the 7th Century BC by the Chu State and lasted until 1878 in the Qing Dynasty. The most remaining we see today was built in the Ming Dynasty about 600 years ago.