When analyzing a source, historian has to remain unbiased and free from personal feelings and opinions. They know that there are different source of an event and they may reveal different facts which could cross-check his argument. The objective historiography is possible only when the historian is unbiased and when different sources like archaeological, literary and other sources are cross-checked and interpreted independently.
The Inca's were the native civilization conquered by the Spaniards.
It resulted in an Allied victory against the German armies in the west
The ziggurat was built by King Ur-Nammu and dedicated it to Nanna/Sîn