I think this would be the Great Wall of China!
although it's actually thought to be much, much longer: over 5000 miles long, if yoiu include natural defensive barriers used in it.
Geography is the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industry
Answer: During the Warring States Period, nobles stopped supporting the Zhou Dynasty (1046–221 BC), and Zhou's vassal states declared themselves independent from Zhou, becoming kingdoms or warring states. Chu became the biggest state. It controlled the southern third of the entire region of the Warring States.
HOPE THIS HELPS
