Ramayana is not just a story; it's an allegory, which is an indispensable part of the Hindu religious canon. Today, there are various kinds of rudimentary debates or perspectives regarding this ancient mythological epic. Ramayana highlights the tragedy that can result from disharmony in the family, followed by painful consequences of forced exile, abduction, waging a war and eventually lessons about proving purity.
Even though, there was a long period of oral tradition before the Ramayana was actually written, No one can prove or disprove anything when it comes to Ramayana. But what we can do is trace down the chronology of places as they are mentioned in the Ramayana and put to analysis the level of differences back then and now.