The world took a big step toward sweeping changes to global taxation as 130 countries and jurisdictions endorsed setting a minimum rate for corporations along with rules to share the spoils from multinational firms like Facebook Inc. and Alphabet Inc.’s Google.The world took a big step toward sweeping changes to global taxation as 130 countries and jurisdictions endorsed setting a minimum rate for corporations along with rules to share the spoils from multinational firms like Facebook Inc. and Alphabet Inc.’s Google.