The major physical feature that the pioneers crossing West had to contend with were the Rocky and Sierra Nevada Mountains.
These mountain ranges were treacherous and many died trying to find passages to cross.
To declare boundaries between the thirteen colonies and the Appalachian Mountains, so American colonists couldn’t create tension with the French and Native Americans who live across the mountains.
Answer:
to tell the reader about an important historical event.
Explanation:
The main reason for the author including this information in the passage was to tell the reader about an important historical event. The author is explaining that the current event taking place has never before happened in the history of civilization, therefore meaning that this current event is making history and will be remembered in the future as a significant historical event. Thus, carrying with it very high importance which the author felt was essential to include.
