1). Where are most of the region's (Russia and the Republics) smaller republics located?

A: ?

2). What was the largest republic in the Soviet Union? What is the largest republic in the region today?

A: ?

3). To which of the Soviet Union Socialist Republics did Kalingingrad belong?

A: Kalingingrad belongs to the R.S.F.S.R. ?

1. They're located in the southeast between the Caspian and Black Seas.

http://www.lib.utexas.edu/maps/commonwealth/caucasus_cntrl_asia_pol_95.jpg

2.
http://en.wikipedia.org/wiki/Republics_of_the_Soviet_Union

3. Right.
http://en.wikipedia.org/wiki/Russian_Soviet_Federative_Socialist_Republic

2). The Russian Soviet Federative Socialist Republic was the largest republic in the Soviet Union. The largest republic in the region today, however, is?

The Russian Republic was the largest in the Soviet Union. Russia is still the largest country in the region. In fact, it's the largest country in the world.

Russia is a country.

What is the largest republic in the region today?

Please stop and think about the information I've given you in this thread.

A republic is a country.

Is it the Kazakh Soviet Socialist Republic?

Kazkhstan is the second largest country/republic in the region. Russia is the largest.

It is the largest from both the past and in the present?