FTSE 100 at 2016 levels amid world tech slump

World stock markets have been falling sharply again, with the FTSE 100 returning to levels not seen for almost 22 months during Friday trading.While a slew of strong corporate earnings from the likes of Tesla and Microsoft which helped drive a recovery in values on Thursday, Asia markets tipped south on the final day of the week.It is also exposed to the US trade war with China, which chimes too with worries about the damage tariffs will inflict on the world economy at a time when US interest ra