Which Areas Have the San Francisco 49ers Strengthened Most This Offseason?

Back in March, San Francisco 49ers head coach Jim Harbaugh stressed the need to find more dynamic receivers for their passing game. 

Naturally, they strengthened that area. 

The 49ers bolstered the unit through the draft, free agency and trade market. But what other areas did San Francisco strengthen during the offseason?

That's what I've broken down in the following slides. 

When creating this list, I considered potential short- and long-term improvement of the areas in question. Also, though I refer to injuries several times throughout this slideshow, I never base an enti...

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