What Ancient Chinese Dynasty started the construction of the Great Wall of China ?

Qin dynasty

Explanation:

It was built as a military defensive line to defend from some northern nomadic nations. Criminals were sent by Shihuangdi, the emperor at the time, to build the wall, also why there are skeletons there cause the workers would die and people just build over their dead bodies though I'm not sure why that is.

Also I'm submitting my answer again as a moderator deleted it because I didn't give enough context apparently so don't mind me. If u see this then have a great day!

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.