On one side of Midosuji is America-mura, the favorite posing ground for Osaka's desperately trendy youth, so named for the large number of stores selling much-sought-after secondhand apparel imported from the US.
America-mura is is a place with many stores selling secondhand apparel imported from the US. 
mnli hypothesis: America-mura is is a place with many stores selling secondhand apparel imported from the US.  premise: On one side of Midosuji is America-mura, the favorite posing ground for Osaka's desperately trendy youth, so named for the large number of stores selling much-sought-after secondhand apparel imported from the US.