I would recommend you 3 books with 3 documentaries to secure maximum marks in paper two, books are
1-Mazharul Haq's "short history of Muslim Spain"
2-Syed Ameer Ali's book " short history of Saracens"
3- Stanley Lane Pool's book "Moors in Spain"

Last two could be downloaded for free.

3 Documentaries are

1-By Bettany Hughes "The Ancient Worlds, When the Moors Ruled in Europe"
2-Islam, Empire of Faith
3-An Islamic History of Europe, BBC

Moreover go through past papers and you would come to know that in Paper two most questions are asked regarding intellectual and artistic achievements of Muslims in Spain, Baghdad and Turkey... So focus these areas for fetching good marks

Regards

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Janoon say or Ishq say milti hay AAZADI