Tell me historical background of profession?

The ranking of established professions in the United States based on the above milestones shows Surveying first (George Washington, Thomas Jefferson, and Abraham Lincoln were all land surveyors before entering politics), followed by Medicine, actuarial science, Law, Dentistry, Civil Engineering, Logistics, Architecture and Accounting.[3] With the rise of technology and occupational specialization in the 19th century, other bodies began to claim professional status: Pharmacy, Logistics, Veterinary Medicine, Nursing, Teaching, Librarianship, Optometry and Social Work, all of which could claim to be professions by 1900 using these milestones.[4]

Just as some professions rise in status and power through various stages, so others may decline. This is characterized by the red cloaks of bishops giving way to the black cloaks of lawyers and then to the white cloaks of doctors.[5] With the church having receded in its role in western society, the remaining classical professions (law and medicine) are both noted by many as requiring not just study to enter, but extensive study and accreditation above and beyond simply getting a university degree.[citation needed] Accordingly more recently-formalized disciplines, such as architecture, which now have equally-long periods of study associated with them.[6]

Although professions enjoy high status and public prestige, all professionals do not earn the same high salaries. There are hidden inequalities even within professions.

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