In which year did this city file the municipal bankruptcy, whose decline was documented in the 2012 documentary film, "Detropia?"
Detropia: Detropia is a 2012 documentary film, directed by Heidi Ewing and Rachel Grady, about the city of Detroit, Michigan. Detropia:  It focuses on the decline of the economy of Detroit due to long-term changes in the automobile industry, and the effects that the decline has had on the city's residents and infrastructure.
i don't know