This week, some Microsoft apps, like Outlook, started their slow march to no longer working in Internet Explorer. Next year, the browser itself won’t be supported anymore, as Microsoft moves users to its Edge browser instead. It’s the end of an era for Internet Explorer, which was created back in the ’90s during the browser wars and was the focus of the big antitrust case against Microsoft. Marketplace’s Meghan McCarty Carino speaks with Margaret O’Mara, a professor of history at the University of Washington. O’Mara said the first major browser was Netscape Navigator, co-developed by Marc Andreessen, who saw browsers as the future of everyday computing.