<u>The correct answer is: he went from Arkansas post to Fort Smith in 1818</u>. His first contact with the frontier occurred during a mineralogical journey through Arkansas in 1817 and 1818. Schoolcraft is known for its discovery of the source of the Mississippi River. He was a geographer, ethnologist and geologist.
The answer is D. You really don't know about 9/11?
The right term that is used usually to describe a region just beyond or at the edge of a settled area is a <u>Frontier</u>, because in that context, a frontier is a place or imaginary line that limits a region, territory, location, city or a country extension, and where sometimes the frontiers are located further or at the border of a settled area.
Answer:
D
Explanation:
A secondary source is not the main person or topic so if Abe lincoln wrote it, it would be a main source so D beacuse he did not write it.
It was used to stop all attack from outsiders
