Why did the united states germany recover from ww2

Both alternatives of your question are true. The US monetary help after WWII where ascertained for humanitary relief of starving population. Another aspect of US help in a political sense is to enable Germany to help themselves, which they did just driven by the misery of the time after WWII. Imagine, 12m Germans where expelled and homeless, cities destroyed, men in war captivity and on top the need to face the moralic disaster