Majha
The partition split the Punjab Province (British India) into the two states of West Punjab (Punjab, Pakistan) and East Punjab. However, the historic Majha region is arguably still the same as before since the partition does not change the previous history of Punjab, therefore does not change the geography of the Majha region of the historic Punjab region.
Dharam Yudh Morcha (film)
When India was given independence from British rule in 1947, partition was done to create two separate dominions, India and Pakistan. India essentially provided a territory for self-government for the Hindus, while Pakistan provided a territory for self-government for the Muslims. The province of Punjab ceased to exist and was divided into two provinces, East Punjab, in India, largely populated by Sikh and Hindu people, and West Punjab, in Pakistan. Led by the Akali Dal, the Punjabi population started demanding Punjabi as the first language and their share of the river water and other resources, in the 1950s and called their protest movement Punjabi Subha Morcha.