What did many americans realize about the united states as a result of world war 2

Americans noticed that after the end of the Second World War, the geopolitical landscape of the world would change in favor of the United States, as it no longer had a threat in Europe nor had a threat in the Pacific Ocean, as the Empire of Japan was defeated during the war. This favorable scenario let the United States grow in economic and military power. Two processes that were perceived by the average American citizen, as job opportunities grew due to the development of the industry, leading to improving his or her living conditions.

following type of cultural development caused people to want and buy new products on the market :

well that depends on how deep the hole is. you'd first go through te crust of the earth, then the upper mantle, then the lower mantle then the outer core, then the inner cor then you'd be stuck in the core to melt.