11.  The central reason for merging is to compete more effectively in the auto parts business.

12.  The global economy was cited as a central reason for the other piece of copyright-related legislation.

13.  The Russian case was not a central reason, Harvard officials say, but was illustrative of problems the institute raised.

14.  This is a central reason why the conflict appears to be growing even more resistant to resolution.

15.  To show black life, period, was the central reason black papers were founded.

16.  A central reason for the pessimism was an unusual amount of squabbling among the Group of Seven countries before the session began.

17.  Telling how America treats some refugees was a central reason for writing the book, along with educating Western readers about genital mutilation, the co-authors say.

18.  Publicity generated by the controversy is seen as a central reason for record-breaking advance ticket sales to cinemagoers throughout the Republic of Ireland.