[simiones]

WWII was a time of plenty for the USA (well, for the civilian population). At the very end of the war, the USA controlled more than half of all the money in the world. There has never been a time in history when a single country was as wealthy as the USA was at the end of WWII compared to its contemporaries *. And yes - all that huge wealth and power led to the USA growing ever more wealthy (in absolute terms) and ever more powerful. So no, this quote doesn't apply to the USA after WWII.

The UK after WWII, or in fact France and Western Germany, are better examples, though I think that the huge amounts of money that the USA decided to pour into them through the Marshall Plan were much more responsible for that then "strong men" forged in the war were.

* The USSR had just lost 20 million people - about 10% of its population. Germany, Poland, the UK, Austria and other European countries had been bombed into oblivion, as was Japan. Most of Africa was still recovering from European colonialism, as was India and most of SE Asia. China was still in the midst of its civil war, and had suffered some heavy losses because of Japan.