Complex sentence: Upon release, the film received positive reviews and broke many box office records and was declared a blockbuster despite the fact that it was released only 2 weeks after the 2008 Mumbai attacks, amidst uncertainty and apprehensions from the trade regarding market conditions at the time.
Split into simpler sentences: Upon release, the film received positive reviews and broke many box office records. It was declared a blockbuster despite the fact that it was released only two weeks after the 2008 Mumbai attacks, amidst uncertainty and apprehensions from the trade regarding market conditions at the time.