Starbucks said Tuesday it’s opening a corporate office in Nashville, Tennessee, to support its planned U.S. expansion. Seattle, where Starbucks was founded in 1971, will remain the company’s global headquarters. But Starbucks said it expects to invest $100 million and employ up to 2,000 people in its Nashville office over the next five years. In a memo to employees Tuesday, Starbucks’ Chief Partner Officer Sara Kelly said some employees will be new hires and others will be contract workers who