Re there any economic reasons for continuing EU agriculture support as opposed to leaving agriculture to the mercy of market forces?

Essay topic:
Are there any economic reasons for continuing EU agriculture support as opposed to leaving agriculture to the mercy of market forces?

Word requirement: maximum 900 words

The main reading is
Richard Baldwin, & Michael Wyplosz (2012), The Economics of European Integration, 4th ed. McGraw-Hill. Chapter 9.

Other readings are
Ali El-Agraa (ed.) (2011), The European Union: Economics and Policies, 9th ed. Cambridge University Press. Chapter 19 &20.

Susan Nello (2011), The European Union: economics, politics and history, 3rd ed. McGraw-Hill. Chapter 12 & 13.

Frank Mcdonald & Stephen Dearden (2005), European Economic Integration , 4th ed. Financial Times/ Prentice Hall. Chapter 4 &11

Jacques Pelkmans (2006), European Integration: Methods and Economic Analysis, 3rd ed. Pearson . Chapter 11.

Michael Artis and Frederick Nixson (2007), The Economics of the European Union, 4th ed. Oxford University Press. Chapter 5.

European Commission (2013), a?Overview of CAP Reform a?. Downloadable at /pdf