What is the name of the large arc of farmland that includes mesopotamia?

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final

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.