What was Halford Mackinder’s theory about power? (Explain this in depth...this is a big deal!) How does this connect to the Soviet Union?

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.

answer biscay bay;