Major U.S. stock indexes saw a significant decline on Monday, driven by investor concerns over slowing economic growth, persistent inflation, and an unstable job market, with the S&P 500 dropping 2% and the Nasdaq Composite falling 3.4%. The downturn, exacerbated by ongoing U.S.-China trade tensions and retaliatory tariffs on American agricultural products, has erased recent gains and pushed the Nasdaq to its lowest level since September. As the market grapples with these challenges, volatility persists, with potential for further fluctuations based on economic data and policy developments.