Who gave the title Guru to ravindra nath tagore?

Satyajit RayA

am attaching a news clipping regarding the How Gandhiji became Mahatma. It is self-explanatory.

We have noticed on your website/News Paper that you claim that Tagore first bestowed the name "Mahatma" on Mohandas Gandhi. However, there is no known evidence of this statement. Even the Gandhi Museum New Delhi does have proof of this. Actually, Nautamlal Bhagvanji Mehta ( Kamdar ) was the first to do so on January 21, 1915 in Jetpur, India.

If you can provide proof, to the contrary, we are welcome to it. However, presenting wrong information is worse than presenting no information. This is a matter of world history, and we would appreciate you looking into this matter. For more info Tagore met Mahatma Gandhi first time in the month of April 1915. Where as Gandhiji visited Jetpur on 1/21/1915.