Star Born by Andre Norton

Raf surveyed the wide sweep of prairie where dawn gave a gray tinge to soften the distance and mark the rounded billows of the ever-rippling grass. He tried to analyze what it was about this world which made it seem so untouched, so fresh and new. There were large sections of his own Terra which had been abandoned after the Big Burn-Off and the atomic wars, or later after the counterrevolution which had defeated the empire of Pax, during which mankind had slipped far back on the road to civilization. But he had never experienced this same feeling when he had ventured into those wildernesses. Almost he could believe that the records Hobart had showed him were false, that this world had never known intelligent life herding together in cities.

He walked slowly down the ramp, drawing deep breaths of the crisp air. The day would grow warmer with the rising sun. But now it was just the sort of morning which led him to be glad he was alive -- and young! Maybe part of it was because he was free of the ship and at last not just excess baggage but a man with a definite job before him.