Overall, the idea of Manifest Destiny had a strong negative impact on the Native Americans, since its believers thought the US was "destined" to expand from the Atlantic to the Pacific--meaning that thousands of Natives were forced of their land.
James Buchanan .............
I believe the correct answer is socialism. The term socialism was first used in the early 19th century in response to the excessive poverty and inequality that accompanied the industrial revolution. It <span>is a range of economic and social systems characterised by social ownership and democratic control of the means of production; as well as the political ideologies, theories, and movements that aim at their establishment.</span>
Sam Adams, John Adams, Paul Revere, George III of the United Kingdom, Thomas Hutchinson, Fredrick North (Lord North), George Robert (Twelves Hewes)
The terrain is one thing they study, for example, if it is woody, or a plain, or rocky, or if it has mountains, etc.
they also study the plants, animals, etc and how they survive in the conditions
hope this helps