UK Prime Minister Keir Starmer welcomed a three-year program by Amazon.com Inc. to invest £40 billion ($54 billion) in the British economy over the next three years, including opening four new warehouses.The online retailer’s plans will create thousands of new jobs nationwide, including 2,000 at a previously announced warehouse in Hull, and another 2,000 in Northampton, the Department for Business and Trade said Tuesday in an emailed statement....