Slumdog Millionaire is a 2008/2009 film directed by Danny Boyle that is set in India.
The director, producer (Christian Colson) and writer (Simon Beaufoy) are all British, meaning that the majority of the creative decisions made about the film are from a British source, however the film's story is based on the novel "Q & A" by Vikas Swarup, who is an Indian author. The majority of the cast are also Indian.
The film was distributed by Parté in the UK and Fox Searchlight Pictures and Warner Bros. Pictures in the US.
The film was released in cinemas thorughout the UK on 9th January 2009, where it went to #2 in box office figures. It was later released on DVD and Blu-ray on 1st June 2009.
As well as the English release, the film was also dubbed into Hindi and Tamil, which allowed for a wider audience.
I've been able to find some examples of marketing techniques used to promote the film. One of these is through the release of official trailers, including those shown below:
This trailer was released by Fox Searchlight (a subsidiary of Fox) in the US. As well as Fox being a US based company we can also see that this is targeted towards the US audience by the trailer featuring quotes from US reviewers (e.g. The Wall Street Journal, Chicago Sun-Times).
This is the trailer released in the UK. It's interesting to note that whereas the US trailer was led simply by text on screen, the UK one has a spoken voice-over narration.
On top of the US trailer, Fox Spotlight also released a series of interview clips featuring the director Danny Boyle about the film, including -
Danny Boyle on India
Danny Boyle on Child Actors
These videos are notable as not only do they directly promote the film, but they also help the marketing by letting the director come across as a likeable public figure, which will encourage the public to go and see his work.