Which most likely explains why some countries lack opposition parties? O They lack popular support.
They destroy the election process.
O They oppose the interests of the people.
O They are prohibited by law.

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.

what are the reasons