Which kind of scholar studies objects left behind by humans?

Archaeology

Explanation:

Within the discipline of anthropology there is a field called Archaeological Anthropology or simply Archaeology. This scientific discipline studies the material remains of past human life and activities. So archaeologists study past objects or buildings used by different cultures to know their behaviours or beliefs. They try to reconstruct past cultures.

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.