Western countries embrass on Hinduism, but, our country dont believe in Ram. They follow Yoga, but, we tell that's waste of time. After 5000 years, Gandhi will be an epic person. It's like that only. So, you can't give proof for everything. Western countries dont have even proof for Jesus. They dont have proof for his childhood, they dont have proof for his disappearance for few years and they themselves believe he came to Himalayas and embrased Budhism and came back and preached in a different way. Who have proof for that. No one. When few hunderd years back the French Astronomer told the Kind that Earth is a globe and NOT Flat, they hung him, because he was not having proof. They, with the help of Science the same countries aggreed that Earth is not Flat. So, if there's no proof for a Belief, it does not mean it's not true. Few years back there was no Harappa and Mohanjadaro. Before that no one knew there was a civilization in India. After it's been found, westerners agreed. Proof might come for Ramayana after so many years, but at that time, you wont have Sethu bridge to preserve.