Meta Platforms Inc. faces a historic antitrust trial beginning Monday that could force the tech giant to break off Instagram and WhatsApp, startups it bought more than a decade ago that have since grown into social media powerhouses. The looming antitrust trial will be the first big test of President Donald Trump’s Federal Trade Commission’s ability to challenge Big Tech. The lawsuit was filed against Meta – then called Facebook – in 2020, during Trump’s first term. It claims the company bought Instagram and WhatsApp to squash competition and…