Answer:
https ://www.yout ube.com/watch ?v=BlyszGfqubY
Explanation:
A: perestroika means openness thus meaning the people were allowed to be open about how they felt
I'm pretty sure the answer is Britain
Answer: They help to clarify what happened in a crime.
Explanation: Witnesses tell the judge and/or jury everything they know about an event. A witness is someone who has <em>relevant information</em> about a crime that had taken place.