By , (Reuters) - The pan-European STOXX 600 index recorded its best day in a month on Tuesday, joining a global rally after the prospect of historic monetary and fiscal stimulus revived hopes of an economic rebound from the COVID-19 pandemic.Aggressive global stimulus has helped to power a rebound in European equity markets since a coronavirus-fuelled crash in March, with the STOXX 600 index now only about 16% below its February record high.The U.S. Federal Reserve will start purchasing corporate bonds on Tuesday through the secondary market corporate credit facility, one of several...…By , (Reuters) - The pan-European STOXX 600 index recorded its best day in a month on Tuesday, joining a global rally after the prospect of historic monetary and fiscal stimulus revived hopes of an economic rebound from the COVID-19 pandemic.Aggressive global stimulus has helped to power a rebound in European equity markets since a coronavirus-fuelled crash in March, with the STOXX 600 index now only about 16% below its February record high.The U.S. Federal Reserve will start purchasing corporate bonds on Tuesday through the secondary market corporate credit facility, one of several...WW…