Amazon is giving some employees a choice: relocate or resign.Bloomberg reports that Amazon is ordering thousands of workers on several U.S. teams to move to main hubs in Seattle, Washington; Arlington, Virginia; and Washington, D.C. Amazon has 1.56 million full-time and part-time employees spread across its global business, including 350,000 corporate workers.The effort to get some employees to relocate has been taking place "for more than a year now," as "some teams have been working to bring t...