which region is north of the columbia basin?

It is a wide, arid lowland area between the Okanogan Highlands, the southern Cascade Range, the Idaho Rockies, and continues on through much of eastern Oregon and northern Nevada.

answer; i believe the answer is (mesopotamia); modern day

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings