(Bloomberg) -- White men no longer make up the majority of board seats at the largest US companies, a historic shift reflecting decades of pressure to diversify the upper ranks of corporate leadership.Most Read from BloombergVail to Borrow Muni Debt to Ease Ski Resort Town Housing CrunchIs Trump’s Plan to Reopen the Notorious Alcatraz Prison Realistic?Iceland Plans for a More Volcanic FutureAs Trump Reshapes Housing Policy, Renters Face Rollback of RightsFor the first time, women and non-White m