Pls help. NO FU^&ING LINKS PLZ! Which of these is an example of an achievement of ancient India?

Vaccination against smallpox during the Gupta Empire
Adoption of Buddhism as state religion of the Gupta Empire
First use of coins as money during the Mauryan Empire
Abolishment of the military under the Mauryan Empire

Just think, why was it effective? -it appeled to critics because it was written well, that made it noticeable to the public including the white population-it was also recognizable to the african americans because it was about their heritage.-it was powerful just keep finding more points and elaborate on them. message me if you need more

The verticals lines in the liner