Mars/Wrigley

In early 2008, a year marked by turmoil in the global credit markets, Mars Corporation was able to negotiate a reverse breakup fee structure in its acquisition of Wrigley Corporation. This structure allowed Mars to walk away from the transaction at any time by paying a $1 billion fee.  Speculate as to the motivation behind Mars and

 Wrigley negotiating such a fee structure-what was the motive for each party?

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