Explain at least three reasons for the rise of conservatism in the last part of the 20th century?

i belive the continental association was created to boycott all contact with british goods.

i also belive it was in december 1, 1774

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.