Answer;
Iron Curtain;
When Hungary opened its borders, it created a "hole" in the iron curtain.
Explanation;
Hungary was the first country to punch a hole in the Iron Curtain.
<span>This meant that many refugees from Eastern Germany who had fled to Hungary, were going to leave and move to Western Germany. They would take this trip by going through Austria (neighboring country of Hungary) to reach Western Germany. Mikhail Gorbachev was personally outraged by this, stating that Hungary had not asked him before taking this measure.</span>
Some of the effects include different culture being introduced to the nation
Also it may teach some people to either be racist / prejudice or kind and accepting
The growing diversity can bring division and could also bring union depending on how current citizens act towards them
Recording artist that don’t follow their labels rules