Definition from Wiktionary, the free dictionary
- caused by; resulting from.
- Rising unemployment due to the economic downturn is spreading.
- 1908, “Fatal fall of Wright airship”, The New York Times:
- The accident was due to the breaking of one of the blades of the propeller on the left side.
Usage notes 
- Though usage of "due to" as a preposition is common, some speakers will object and recommend owing to instead, reserving "due to" for use as an adjective only.