Final answer:
During WWII, the United States experienced economic growth and technological advancements.
Step-by-step explanation:
In comparison to the Soviet Union during WWII, the United States experienced economic growth and technological advancement. The US economy thrived during the war, as American cities were not directly attacked, leading to unprecedented growth. This allowed the US to provide economic aid to other nations through initiatives like the Marshall Plan.
Moreover, the United States made significant advancements in science and technology, particularly in the race for space exploration, which fueled further scientific development.