We would get B.
This happens because it's just another key detail, it's a detail that's aside of the sentence that may or may not be important.
Since during the Louisiana Purchase, we purchased so much land(technically the whole entire United States). Manifest destiny is our belief to spread from sea to shining sea so, we were motivated to expand to that new land we purchased. That would make the thirteen colonies less crowded and over populated.
Answer:
they show us the location of the parts of the world
