The total displacement rate of the pacific plate relative to the north american plate at wallace creek is .051m/yr. calculate the percentage of motion by dividing.035 m/yr by the total displacement rate of .051 m/yr.

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

Largely uneconomic because they provide little profit or food surplusi think so

Temperature, rainfall and relative humidity.