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Banco Santander—the euro zone's largest bank by market value—is emerging as one of the few winners in the global economic crisis. When Britain's government nationalized beleaguered mortgage lender Bradford & Bingley on Sept. 29, the Spanish bank quickly agreed to pay $1.09 billion for its retail branches. That move came only days after Santander sealed a $2.24 billion acquisition of British lender Alliance & Leicester. The bank has also made a preliminary offer for Germany's Deutsche Postbank.