Answer:
Due the campaigns against tyrants and the government systems inside the region. Countries like Poland, Latvia, Denmark etc faced the imbalance in there allegiance with the neighboring countries and more over with the lack of cooperation between the east and west.
While, the soviet union was still there and they had the political and military powers but due to lack of cooperation with its former partners or we can say countries who were fighting for the same cause which lead to a more derailed form of processes inside the whole region.
Answer: Stalin needed lands to feel secure.
Explanation: i just took the test and that was the right answer.