Archeologists believe that the Great Wall of China was built between the seventh and ninth century B.C. The construction began in the Zhou dynasty when the people at war built a defensive wall to ward off enemies from the north. It started off as a regional project until the Qin dynasty joined the separate walls together. The wall is stretched from east to west over 5,000 kilometers long. The Great Wall of China is the …showed first 75 words of 627 total…

…showed last 75 words of 627 total…see from space. Even if aliens wanted to know a little about us all they would have to do is look at earth and they would see a great big wall to keep out invaders like aliens. The aliens would have to be closer than Mars to see it clearly. From the moon the Great Wall of China is very visible. Although it took 2,600 years to build it helps us learn better about our history.