There was conflict in the Indian Ocean that was changing the gravity and he went there to stop just like he did in Metropolis( I think that is what it was called) Last time I checked the Indian Ocean was near India not in America. Besides the reason they were in America was because they found superman in America because he just so happens to live there. You can't judge American writers to write in a setting they've never been too, it's like telling a German to make a story that happens in Mexico.
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