What are the historical landmarks, similarities and dissimilarities of Ramayana? religiousbooks.quora.com

Different versions of Ramayana have been written since the first epic composed by Sage Valmiki.
After then, more than 300 original Ramayana have been written in Sanskrit and many other regional languages of India.
Every Ramayana is a piece of priceless philosophical treatise and precious work of literature.