Why is it colder in siberia in winter than at the north pole?

I am not exactly sure but from my knowledge I would say Siberia is the only part of Russia located in the Arctic circle. It is the farthest part of Russia from the equator, and is therefore colder. Western Russia is closer to the equator and receives more sunlight and warmth than Siberia.

The answer to the question is c.

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