Washington | Meta CEO Mark Zuckerberg took the witness stand on Monday (Tuesday AEST) to defend his social media empire in a landmark antitrust trial that could dismantle a company that has transformed how the world connects online.

In a packed courthouse in the US District Court for the District of Columbia, lawyers for the US Federal Trade Commission presented Zuckerberg with a binder full of dated emails and internal communications about his acquisition strategy, pushing him to defend his words.