Answer:
The Great Wall of China is one of the world's most recognizable landmarks and a symbol of China's long and storied history. It was built over centuries, with construction beginning in the 7th century BCE and continuing through the Ming dynasty (1368-1644 CE). The Great Wall served as a barrier to protect China's northern borders from the nomadic tribes that lived in the vast grasslands beyond.
The early walls were built with earth and stone, but during the Qin dynasty (221-206 BCE), the wall was rebuilt and reinforced with bricks and stone. Under the Han dynasty (206 BCE-220 CE), the Great Wall was extended westward into the Gobi Desert and beyond, with watchtowers and fortifications added to strengthen its defense capabilities.
During the Ming dynasty, the Great Wall was further strengthened and extended to its current length of over 13,000 miles (21,000 km). The Ming dynasty added additional fortifications, watchtowers, and beacons, making the Great Wall a formidable obstacle for any invading force.
The construction of the Great Wall was a massive undertaking, with hundreds of thousands of workers involved in its construction over the centuries. Many workers died during its construction due to harsh working conditions, disease, and attacks by bandits.
Today, the Great Wall is one of China's top tourist attractions and a UNESCO World Heritage Site. It continues to be a symbol of China's long and complex history and a testament to the ingenuity and skill of the Chinese people.
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