Question

______ is an essential part of Russia's hinterland, making up three-fourths of its land and providing a large proportion of its raw materials.

Answer 1

The correct answer is:

Siberia.

Siberia is also known to be very cold and inhospitable and in the time of the Comunist Regine many people were sent to camps in Siberia - Russians and non-Russians alike - and many of them never came back.

There are also small indigenous communities in Siberia speaking isolated languages.