INS Shalki is the first indigenously built submarine in India. It is part of the Shishumar class of submarines and was commissioned into the Indian Navy on December 7, 1991. INS Shalki, along with its sister submarine INS Shankul, marked a significant achievement in India's naval capabilities as it was built at the Mazagon Dock Limited in Mumbai, showcasing the country's growing capacity to design and construct submarines domestically.

The Gatimaan Express is one of the fastest train in India and has the greatest operational speeds as of 2022, with certain sections reaching 160 km/h (99 mph), while the Vande Bharat Express is the fastest train in India and has the fastest top design speed of 180 km/h (110 mph).

1. Jainism and Buddhism originated during the later Vedic period when the people were developing into Mahajanapadas.

2. Jainism was founded by Rishabhdev who was born in Ayodhya and his symbol was the bull.

Sl. No.          - Name                         -  Symbol         - Birthplace

1                Rishabhnath (Adinath)   Bull                    Ayodhya

2                Ajitnath                              Hathi                 Ayodhya                                           

22              Neminath                          Shankh               Dwarka

23            Parshvanath                       snake                  Kashi

24           Mahavir Singh                   Sher                 Kshatriyakund