Answer:
The Great Wall of China is a massive defensive structure that spans the historical northern boundaries of ancient Chinese kingdoms and Imperial China. Its objective was to safeguard everyone from diverse Eurasian Steppe nomadic clans. As early as the 7th century BC, several walls were built. Qin Shi Huang, China's first emperor, later connected them together with chosen stretches. There isn't much of the Qin wall left. Many following kingdoms would later construct multiple lengths of frontier walls. The Ming dynasty constructed the most renowned and well-known parts of the wall.
Border restrictions, allowing the imposition of tariffs on products transported along the Silk Road, trade regulation and encouragement, and immigration and emigration control are some of the other purposes of the Great Wall. Furthermore, the construction of garrison stations, signaling capabilities, watchtowers, soldier barracks through smoke or fire, and the fact that the Great Wall's course also acted as a 'transportation corridor' reinforced and improved all of the Great Wall's defensive attributes.