What was oklahoma's role in the spanish and french exploration of north america in the 1600's and 1700's?

Oklahoma served as a transportation corridor for their rival military and economic ventures.

This is because it was situated at the border, that is on the northern fringe of Spanish exploration of North America and on the western fringe of French exploration

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.