Answer:
The Cold War
Step-by-step explanation:
The Cold War (not exactly a war) was what was caused after the World War 2 conflict. The Souviets wanted to establish a communist regime, while the United States and it's allies preferred a democratic government. The Souviets had won the war and got a lot of countries that Germany invaded (Hungary, Poland, etc.) Nuclear tensions and arms tensions began to complicate the globe.