I really don't have much to add to D.J's description, he's pretty right on. Great Falls economy has been based on surrounding farming, mostly wheat, barley and cattle hay operations. But the largest single influence since the start of the Cold War is Malmstrom Air Force Base. It is still a big deal but has been winding down as the Cold War ended.
Hunting in the 100 miles around Great falls is weird as driving down some old gravel country road in farm country you will come up on a fenced in nuculear missle base. It's hard to tell which ones are still manned underground and which have been abandoned. You would think they would be far off the road and enclosed by rings of security. These are right next to the road with a serious warning sign and a tall barb wire fence and lots of security cameras. I have ofeten wanted to drive up to the gate to see what if anything would happen but haven't got the nerve. I'm told that security in a helicopter would be there pronto.
Anyway those of us west of the divide love going east of the mountains to hunt pheasant, huns, sharptail, mule deer, antelope and some elk, plus the duck hunting is very good. if you are interested in paleontology, that area is famous for dinosaur digs. my buddies found a complete big dinosaur skeleton while hunting antelope.
The wind is bad, but they have a lot more winter sun than we do west of the divide. Make sure you bring your duck boat, Freezeout Lake is much better hunted by boat.