Who created the Great Wall of china

Qin Shi Huang. The history of the Great Wall of China began when fortifications built by various states during the Spring and Autumn (771-476 BC) and Warring States periods (475-221 BC) were connected by the first emperor of China, Qin Shi Huang, to protect his newly founded Qin dynasty (221-206 BC) against incursions by nomads

Qin Shi Huang, to defend his Qin dynasty against invasions by nomads from Inner Asia.