Hey guys! Please help paraphrase( The Great Wall of China is a huge protective barrier that was built across the historical northern borders of ancient Chinese states and Imperial China. It's purpose was to protect everyone against various nomadic groups from the Eurasian Steppe. Several walls were constructed from as early as the 7th century BC. Later, they were joined together with selective stretches by Qin Shi Huang, the first emperor of China. Not much of the Qin wall remains. Later on, many successive dynasties have built multiple stretches of border walls. The most popular and well-known sections of the wall were built by the Ming dynasty.

Some other purposes of the Great Wall include border controls, allowing the infliction of duties on goods transported along the Silk Road, regulation and encouragement of trade, and the control of immigration and emigration. Furthermore, all of the defensive characteristics of the Great Wall were increased and improved by the construction of garrison stations, signaling capabilities, watchtowers, troop barracks through the means of smoke or fire, and the fact that the path of the Great Wall also served as a 'transportation corridor'.