"frontier mentality" refers to a mindset focused on exploration, progress, and self-reliance. It is often associated with the idea of pushing the limits, taking risks, and embracing challenges in order to expand and innovate. Full definition
«Belize is a young, healthy, vigorous nation with a lot of assets and a kind of frontier mentality where anything still goes. (si.com)
South Africa and the USA were founded on quintessentially «male frontier mentalities». (goodman-gallery.com)
«There's still a frontier mentality in Texas, Oklahoma and other places west of the Mississippi,» he said, «We have a tradition of solving our own problems.» (religion-online.org)