I wouldn't say baseball is a sign of Americanization of Japan, it was quite popular before the war; the American occupation didn't bring baseball to Japan.
Not unusual. Considering how ignorant, so-called American experts on Japan were, it is a miracle that the Japanese democratic reformers were able to overcome American blundering and make the nascent democracy movement that MacArthur's people found and encouraged work. There has to be something there to encourage, you know?
I wouldn't say baseball is a sign of Americanization of Japan, it was quite popular before the war; the American occupation didn't bring baseball to Japan.