In the third episode of this landmark series charting the story of human civilisation, Andrew Marr plunges into the spiritual revolutions that shook the world between 300 BC and 700 AD.
This was an age that saw many huge revolutions:
- The bloody prince Ashoka turn to Buddhism in India
- The ill-fated union of Julius Caesar and Egypt's Cleopatra
- The unstoppable rise of Christianity across the Roman Empire
- The dramatic spread of Islam from Spain to Central Asia
Each dramatic story pits the might of kings and rulers against the power of faith.
But Andrew Marr discovers that the most potent human force on the planet came from the combination of faith and military power.
Both Christianity and Islam created new empires of 'the word and the sword'.
Andrew Marr's History of the World on the BBC
You can watch this episode of Andrew Marr's History of the World on BBC One at 9pm on Sunday 7 October 2012. For more information, and links to BBC iPlayer, visit the BBC One website.