The Justice Department and Google are set to make closing arguments in a trial alleging Google’s online advertising technology constitutes an illegal monopoly.

Alexandria. Google, already facing the possibility of a breakup over its dominant search engine, is now defending itself against a new antitrust challenge from the US Department of Justice. This time, the focus is on Google's advertising technology, which places ads in front of online consumers.

Google and the US government will face off in a federal court on Monday, as each side delivers its closing arguments in a case revolving around the technology giant's alleged