Answer:
1. James Augustus Hickey began to edit the Bengal Gazette.
2. Catholic priests printed the first Tamil book.
3. About 50 books had been printed in the Konkani and Kanara language.
4. The first Malayalam book was printed.
The exact dates of these events are:
1. James Augustus Hickey began to edit the Bengal Gazette in 1780, which was the first newspaper printed in India in English.
2. Catholic priests printed the first Tamil book in 1579, which was a catechism.
3. About 50 books had been printed in the Konkani and Kanara language in the 16th century.
4. The first Malayalam book was printed in 1772, which was a translation of the Bible.