The correct statement regarding the impact of the creation of the ECSC (European Coal and Steel Community) on the economies of the individual nations involved is:
"The ECSC lifted tariffs on certain goods between the six nations in the community. This helped their economies recover after World War II as it lowered the prices of necessary resources."
The ECSC was established to facilitate economic cooperation, promote trade by reducing tariffs, and ensure the free movement of coal and steel among the member nations, which was crucial for industrial recovery after the war. This created a more competitive market and contributed to economic growth in the participating countries.