Which natural process is responsible for ridge push: A) Seafloor spreading
B) Mantle convection
C) Subduction
D) Reversal of Earths magnetic field.

I want real answers with EXPLANATIONS.
I will try to crown the first answer if I figure out how.

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

Answerscripps institution of oceanography; i believe this is correct plz check first good luck;

What are we gonna edit