Answer:
One post-war goal of the United States that created tension with the USSR was the United States' push to promote democracy around the world.
Step-by-step explanation:
The Soviet Union and the United States, two main players during World War II who joined forces as allies to defeat Hitler's forces, started a new chapter in their relations after the war ended. On one hand, the United States became the leader of pushing for democracy to spread around the world as the only successful way to govern, while the URSS strongly defend the communist system. This opposite viewpoints on how countries should govern made the allies to stop being so, and tensions between them grew.