Dhaka, April 24 -- Apple was fined 500 million euros ($570 million) on Wednesday and Meta 200 million euros, as European Union antitrust regulators handed out the first sanctions under landmark legislation aimed at curbing the power of Big Tech.

The EU fines could stoke tensions with US President Donald Trump who has threatened to levy tariffs against countries that penalise US companies. Trump's White House called the fines a "novel form of economic extortion" that the United States will not tolerate, reports Reuters.

They follow a year-long investigation by the European Commission, the EU executive, into whether the companies comply with the Digital Markets Act (DMA) that seeks to allow smaller rivals into markets dominated by the big...