By Chuck Mikolajczak NEW YORK (Reuters) – A gauge of global stocks retreated on Monday after six sessions of gains while U.S. Treasury yields rose ahead of central bank policy announcements and data that may shed light on whether progress has been made in bringing down inflation. Investors widely expect the Federal Reserve will raise rates by 25 basis points (bps) on Wednesday, with announcements on Thursday from the Bank of England and European Central Bank (ECB), both of which are largely expected to hike by 50 bps. “It would be pretty shocking for them to come out and do anything other than…