Where in the World are Grandpa and Grandpa - weather delayed

We'll do two of the states through which we traveled now - I'll call them sister states and their names are pretty much alike.  One is a bigger sister and it joined the union on the same day as its little sister, November 2, 1889.  The explorers from France found this territory but the states have names from a native american Indian tribe.  The little sister state has gold in "them thar hills" and an artist carved humongous faces of four different presidents into a mountainside.  This state is the second largest producer of sunflower seeds and sunflower oil.  Agriculture is one of its main economic endeavors. Its capital is a French first name. ............A fun nonsense fact - It has a portion of the state that makes you think that evil is done there but that's not true!..............The bigger sister state is much bigger in size and its capital starts with a "B".  90% of its land is devoted to farming and its tourism is concerned with hunting of waterfowl, grouse, pheasant and deer.  The farms grow wheat, barley, rye, sunflower, cattle, sheep and hogs...............This state is in an ecological conundrum right now because a fracking process is producing oil but possibly contaminating water and land and air.  ...........A fun nonsense fact - the capital is named the same as a jelly doughnut in Chicago.