Answer:
a great wall to stop attacks by northern nomads
Explanation:
The statement which most accurately describes the legacy of emperors of the Qin dynasty is the construction of "great wall to stop attacks by northern nomads".
The Qin Dynasty constructed the Great Wall of China. The Great Wall itself served as national boundaries. It also served as a defensive infrastructure which helped to protect against invading nomadic tribes from the north. When later dynasties came, they expanded and built beyond Qin's original wall.
