What was the main reason American colonists considered the stamp act to be unfair?

They thought that the British Parliament shouldn't have the right to tax them.

Explanation:

All of the colonists were mad because they thought the British Parliament shouldn't have the right to tax them. The colonists believed that the only people that should tax them should be their own legislature. ... They wanted them to take back the law to pay taxes on stamps.

D - The Stamp Act was an example of taxation without representation.

Explanation:

for edge!

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.