From the Southern Hemisphere, look generally northward, higher in the sky and turn this chart upside down. Chart via AstroBob. Bottom line: The Teapot asterism in the constellationSagittarius<span> is easy to spot in a dark sky. When you look in the direction, you're looking toward the center of our Milky Way galaxy.</span>
New land, more resources, and the spread of Christianity
The answer is cementation that is a major process.
The mountains that you are describing are the Appalachians, which are the oldest mountains in North America that are present today. Due to millions of years of erosion from glaciers, wind, water and seismic activity, the Appalachians were rendered into hilly and rounded mountains, with the rough, rocky, and thin soil being mostly of sedimentary rock that was eroded from the mountains.