Thank you so much Abo Besho
We can also have a look at what the Free Dictionary says about due to
due to
prep. Because of.
Usage Note: Due to has been widely used for many years as a compound preposition like
owing to, but some critics have insisted that
due should be used only as an adjective. According to this view, it is incorrect to say
The concert was canceled due to the rain, but acceptable to say
The cancellation of the concert was due to the rain, where
due continues to function as an adjective modifying
cancellation. This seems a fine point, however, and since
due to is widely used and understood, there seems little reason to avoid using it as a preposition.
Here is the link of the site
http://www.thefreedictionary.com/due+to