instruction: In which regions has Starbucks come under scrutiny?
context: Starbucks, an American coffee company and coffeehouse chain, has been the subject of multiple controversies. Public and employee criticism against the company has come from around the world, including a wide range issues from tax avoidance in Europe, anti-competitive practices in the United States, human rights issues in multiple countries, and labor issues involving union busting, questions about pay equity, and ethics in partnerships in Africa.
response: Criticism of Starbucks has been noted in Europe, the United States, as well as Africa.