Was the stamp act an unreasonable and unfair tax

Yes, the Stamp Acts were a prime example of "taxation without representation" which lead to the Revolutionary War. The colonists had no say in the taxing, which made it very unfair.

Explanation:

The Stamp Act was enacted by the British Parliament on March 22, 1765. The original tax was inflicted on all American homesteaders and ordered them to pay a tax on each piece of published writing they used. Ship's papers, statutory documents, licenses, newspapers, different publications, and even playing cards were charged.

"the royal proclamation of 1763"