What is an example a secondary source a historian might use in a study of the negative effects of the Mongolian Empire on Europe?(1 point)

Question

Responses

an excerpt from The Travels of Marco Polo, written by Marco Polo in 1300 CE
an excerpt from The Travels of Marco Polo , written by Marco Polo in 1300 CE

the eyewitness account of the destruction of Kiev by Giovanni da Pian del Carpine in 1246
the eyewitness account of the destruction of Kiev by Giovanni da Pian del Carpine in 1246

the 1353 painting The Battle of Leignitz by an unknown artist
the 1353 painting The Battle of Leignitz by an unknown artist

a letter written by English philosopher Roger Bacon

Answer 1

A letter written by English philosopher Roger Bacon.

This is an example of a secondary source because it reflects Bacon's interpretations and insights based on events that occurred during the time of the Mongolian Empire, rather than being a firsthand account or contemporary source.