because it's the place of Pakistan people, the pure people in the land of the Muslims so that's why we call it Pakistan.
Edit by Greenvox:
It's an acronym created by Chaudry Rehmat Ali:
P - Punjab
A - Afghania
K - Kashmir
I - (vowel)
S - Sindh
TAN - Baluchi[TAN]
The traditional view of Urdu speaking people of Pakistan is that the meaning derived from the urdu word "Pak" (pronounced (Paak in urdu) and the urdu word "stan" (pronounced Staanin urdu). So in traditional thinking the word Pakistan means "Land of the Pure. However the word "PAKISTAN" was first used by Chaudhry Rahmat Ali AKA Rehmat Ali Khan an Indian born British Student who was studying in Cambridge University, UK. On January 28, 1933, he voiced his ideas in the pamphlet entitled "Now or Never; Are We to Live or Perish Forever?". The word 'Pakstan' referred to ONLY "the five Northern units of India, Viz: P unjab, A fghanistan province, K ashmir, S ind and Baluchis tan. Already we can see this definition of the land mass of Pakistan is a contrast to the actual final land mass that became East and West Pakistan. In fact with reference to East Pakistan, He offered "Bang-i-Islam" for a Muslim homeland in Bengal and "Usmanistan" for a Muslim homeland in the Deccan. He also suggested "Dinia" (place of religion) as a name for a subcontinent for various religions. This is relevant because Rehmat Ali became disenchanted with the independence movement. He saw his ideas being used but in a way that had caused mass bloodshed to both sides of the partition. He was also very disappointed about how the land had been divided especially as East and West Pakistan were many 1,000 of miles apart. Rehmats Ali's reward for inventing the name was exile from Pakistan and he now rests in a grave in Cambridge in Newmarket Road Cemetery.
Pakistanis are not called Pakis by anyone other than rascists. The term was coined by extreme right wing activists as a slur on all South Asian immigrants. In time the word has come to be used casually by certain groups of South Asian youths, however it is not and has never been an ethnic demonym. Pakistan is a multi-ethnic country with nations such as the Baloch, Pashtun, Punjabi, Waziri, Sindhi, Kalash etc so there is no such thing as an ethnic Pakistani. If there was, the demonym would be "Pak" and not "Paki".
Because the country they are from is called Pakistan. The Demonym for a person from Pakistan is Pakistani therefore "Pakistanis are called Pakistanis". The name has nothing to do with ethnicity as it is a multi-ethnic country and there is no group of people called "Paks" or "Pakistanis" based on tribal or ethnic grounds.
Because it's a short form of saying Pakistani and yes Pakistanis are called Pakis.
because they live in Punjab province
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