NEW YORK (Reuters) -U.S. stocks extended their rally and the dollar strengthened as solid data helped investors look past notes of caution from world central bank leaders regarding mounting economic uncertainties and U.S. President Donald Trump's erratic tariff policies. U.S. data showed jobless claims holding steady and an unexpected increase in existing home sales, which helped calm fears that the economy is softening, despite the U.S. Federal Reserve's lowered economic projections released on Wednesday. Straight on the heels of the Fed's decision to hold rates steady, the Bank of England (BoE) followed suit, holding its key interest rate steady while cautioning against assumptions it would cut rates in the near future as it grapples with economic uncertainties.