Why is the great wall likely such a popular attraction?

Emperor Qin Shihuang's contribution to the design of the Wall is considered to be of great importance as it ensured peace for the people in the northern part of China against the Huns and established a pattern of defense for future generations. The Great Wall of the Qin Dynasty was built at the expense of many lives.

b) the importance and limits of political power.

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism