Canada's competition watchdog announced Tuesday it was closing its investigation into allegations Google abused its dominance in online search advertising to keep rivals down. The move comes as the EU is set to unveil formal antitrust charges against the US-based tech giant over how it markets its Android mobile phone operating system, while it continues to investigate shopping services on Google's search engine. In Canada, the Competition Bureau said it had found evidence to support one of the allegations against the company: that it used "anti-competitive clauses" in certain contracts that effectively excluded its competitors.



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