Great Wall of China – Qin Shihuang Di ordered the construction of the Great Wall of China to protect the The wall stretched miles and took years to build. fill in the blanks
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Great Wall of China -- Qin Shihuang Di ordered the construction of the Great Wall of China to protect the northern border from nomadic attacks. The wall stretched ~13171 miles and took ~20 years to build.

to keep attackers such as Mongolians out

21196km

20 years

(sorry if I'm wrong)

during the middle ages bibles and most christian literature was written in latin i think that’s the answer you are looking for