You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract European Commission Gives Green Light to Publicis Omnicom Merger Holding Companies Still Await Approval in China, Colombia By Emma Hall and Emma Hall, Published on January 09, 2014 0 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.