Punjab
The major language spoken in the Punjab is Punjabi. In the Indian Punjab this is written in the Gurmukhi script. Pakistan uses the Shahmukhi script, that is closer to Urdu script. Hindi, written in the Devanagri script, is used widely in the Indian states of Himanchal Pradesh and Haryana. Several dialects of Punjabi are spoken in the different regions. The Majhi dialect is considered to be textbook Punjabi and is shared by both countries.
Punjabi nationalism
As, after Bengali nation and Hindi-Urdu Speaking UP, CP people of Gunga Jumna culture, Punjabi was the third biggest nation in South Asia and for the British, Punjab was a frontier province of British India because, Punjab had boundaries with Afghanistan, Russia, and China. Therefore, to rule the South Asia, the prime factor for the British rulers was to control the Punjab by dominating or eliminating the Punjabi nation.