Compare & contrast the reigns of Ivan III ‘the Great’ & Ivan IV ‘the Terrible’. Why are they significant in Russia’s history?

As the topic said the main focus is to compare and contrast the reigns of Ivan the Great and Ivan the Terrible and the impact that each had on Russia’s history.
-Of the four sources if at all possible have one of them be from the book “A History of Russia” by Riasanovsky, any edition of the book will work.
-Any of the words used in the essay that come from the sources must be put in quotation marks.
-If there are any questions please make sure to send me a message