The Great Wall of China began construction during the 7th century BC, with initial efforts attributed to various states in the southern part of China. However, the most well-known sections were built during the Ming Dynasty (1368-1644) as a means to protect against invasions from northern nomadic tribes, particularly the Mongols. The wall served as a military defense as well as a symbol of Chinese unity and strength. Over the centuries, the Great Wall underwent numerous renovations and expansions, ultimately becoming a UNESCO World Heritage site and a significant cultural symbol of China, reflecting the country’s historical commitment to safeguard its territory.