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

• The eyewitness account of the destruction of Kiev by Giovanni da Pian del Carpine in 1246
•The Travels of Marco Polo, written by Marco Polo in 1300 CE
• The 1630 painting The Battle of Legnica by Matthäus Merian the Elder
• A textbook narrative about the tactics of Mongol leader Ogedei Khan