Nebraska's 77,347 square miles make it the 16th-largest U.S. state by area. Nebraska would also make for a relatively large country. With 195 U.S. State Department-recognized countries in the world, there are about 110 sovereign nations smaller than Nebraska.
Using maps to illustrate size is a tricky matter, because most 2D map projections distort size in favor of shape. Thetruesize.com, a tool that runs on top of Google Maps, accounts for these distortions, allowing for accurate size comparisons. See some of the many countries that would fit inside a Nebraska-sized self-storage unit.