What is the part of preamble keeping peace in the country

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.

a reason that was key to coolidge's victory in the 1924 presidental election was that; democratic party supporters were split in the north and south.