Complex sentence: He founded the Ramakrishna Ashrama at Gretz (Centre Vedantique Ramakrichna), outside Paris, France, in 1947 and spread the message of Vedanta in the French language, becoming well known in France as an author and lecturer.
Split into simpler sentences: He founded the Ramakrishna Ashrama in Gretz (Centre Vedantique Ramakrichna), France in 1947 and spread the message of Vedanta in French language. He became well known in France as an author and lecturer.