Last week, the Federal Trade Commission closed its investigation of Google's search business. That ends the most significant antitrust probe the company has faced so far. But it's not the first time Google has come under the scrutiny of antitrust regulators in the United States, nor is it likely to be the last. Google, whose search business is still the subject of antitrust inquiries in Europe and elsewhere, has tangled with the FTC or the Department of Justice over competition matters at least nine times in the last four years. In four out of five cases, the DOJ derailed a deal or brought an enforcement action. The FTC cleared Google in a majority of its investigations. Here's a look at some of the company's biggest hurdles.
(NB: Dates indicate when the investigation closed or action related to the investigation took place.)
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