The Federal Reserve took its most aggressive step yet to try to tame rapid and persistent inflation, raising interest rates by three-quarters of a percentage point on Wednesday and signaling that it is prepared to inflict economic pain to get prices under control.The rate increase was the central bank’s biggest since 1994 and could be followed by a similarly sized move next month, suggested Jerome H. Powell, the Fed chair, underscoring just how much America’s unexpectedly stubborn price gains are unsettling Fed officials.As central bankers drive their policy rate rapidly higher, it will make buying a home or expanding a business more expensive, restraining spending and slowing the broader economy. Officials expect growth to moderate in the coming months and years an …
