How is patagonia mostly formed?

a
water
c.
snow
b.
rocks
d.
sand

Frost is not uncommon in the desert but, due to the very dry condition year round, snow is rare.This creates a rain shadow that accounts for the formation of the desert.

The answer is Rain

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