DALLAS & PARIS--(BUSINESS WIRE)--lt;a href="https://twitter.com/hashtag/EU?src=hash" target="_blank"gt;#EUlt;/agt;--Ryan, a leading global tax services and software provider, announced today the acquisition of Paris, France-based VAT Systems, a tax specialty firm that serves as a one-stop shop for all international value-added tax (VAT) compliance and recovery services. Ryan is the largest Firm in the world dedicated exclusively to business taxes and brings a multidisciplinary team of more than 2,200 professionals serving more than 14,000 clients globally, including many of t