<P> The rivalry with Liverpool is rooted in competition between the cities during the Industrial Revolution when Manchester was famous for its textile industry while Liverpool was a major port . Manchester United and Liverpool are also the two most successful teams in England and, at many points in their history, they have battled each other for the league title (most recently in the 2008--09 season). Their matches are usually considered by the players and their fans as the biggest in any given season . </P> <P> The "Roses Rivalry" with Leeds stems from the Wars of the Roses, fought between the House of Lancaster and the House of York, with Manchester United representing Lancashire and Leeds representing Yorkshire . </P> <P> The rivalry with Arsenal arises from the numerous times the two teams, as well as managers Alex Ferguson and Arsène Wenger, have battled for the Premier League title . With 33 titles between them (20 for Manchester United, 13 for Arsenal) this fixture has become known as one of the finest Premier League match - ups in history . </P> <P> Manchester United has been described as a global brand; a 2011 report by Brand Finance, valued the club's trademarks and associated intellectual property at £ 412 million--an increase of £ 39 million on the previous year, valuing it at £ 11 million more than the second best brand, Real Madrid--and gave the brand a strength rating of AAA (Extremely Strong). In July 2012, Manchester United was ranked first by Forbes magazine in its list of the ten most valuable sports team brands, valuing the Manchester United brand at $2.23 billion . The club is ranked third in the Deloitte Football Money League (behind Real Madrid and Barcelona). In January 2013, the club became the first sports team in the world to be valued at $3 billion . Forbes Magazine valued the club at $3.3 billion--$1.2 billion higher than the next most valuable sports team . </P>

How many epl titles has manchester united won