Sher shah laid the foundation for the administration of the Mughal Empire do you agree

In 1537, when Babur's son Humayun was elsewhere on an expedition ,Sher shah overrran the state of Bengal and established the duty dynasty. His reorganisation of the empire laid the foundations for the later Mughal emperors, notably Akbar, son if Humayun.

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".