What caused Kmart to plunge from being a top retailer to its current state

The paper needs to be able to provide information of what cause Kmart’s downfall from the Procurement and acquisition discipline. Maybe divide the failures into three categories; those issues that have to do with the changing consumer buying preferences (online); changes in economic conditions; and finally and most important the company management and their ability to change strategy in light of consumer. Did they not see it coming? why? Kmart Corporation is an American big box department store chain. The paper needs to be able to depict the downfalls from the beginning to now