which of the following would be an investigation of the tradition to democracy and eastern Europe help to prove true?

The Soviet Union remains the dominant force in central Asia in eastern Europe.
Democracy is thriving in all countries behind the iron curtain.
The adoption of the free market went smoothly.
Religion could be more freely and most eastern European countries.

An investigation of the tradition to democracy and eastern Europe would likely help to prove that democracy is thriving in some countries behind the iron curtain, as well as that religion could be more freely practiced in most eastern European countries.