Founded in Sweden, IKEA has grown to be the world's largest furniture retailer, specializing in flat-pack kits to be assembled at home. IKEA is also renowned for its prominent efforts to reduce its environmental impact and increase the social good generated throughout its supply chains. Although IKEA has certainly been reactive to wider trends and demands, many argue that responsibility has been at the core of IKEA's operation throughout its history. Having said this, IKEA has not gone without criticism, and perhaps the biggest area of controversy is the company's unusual legal structure that some say fails tests of transparency, and possibly implies tax evasion.