The latitudes receive varying amounts of sunlight and have four distinct seasons.
a.
high
b.
low
c.
middle
d.
polar

Polar , i have no distinct reasons.

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

C.about 10% i think