Despite Cultural Pluralism, the people of all the provinces are united as one nation. In other words, Sindhi, Punjabi, Balochi and Pushto culture, they have one value in common that they call themselves Pakistani first. Pakistan came in to being on the basis of sacrifice of wealth and lives given by the people all these four provinces for common purpose.
The base of Pakistan is Islam therefore; the people living in all the provinces are tied by one chain of Islam. The relation of Islam, unlike the western nations, brings the people of Pakistan very close.
Islam negates the concepts of territorial and race differences as poet of East Allama Iqbal said: “We are the Muslims and whole of the world is our country.”