At the most basic level, humans need which of the following to establish a successful inhabitable settlement.
a.
arable land
b.
cooler climates
c.
mineral resources
d.
transportation technology

The correct answer here is A. At its most basic level, human beings need arable land to establish a successful inhabitable settlement. Without this, they will not be able to grow the essential crops needed to eat and survive, or rear livestock.

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years