The Wikipedia article on the 'History of Democracy' is quite comprehensive and includes information on:
- Mesopotamia
- India
- Sparta
- Athens
- The Roman Republic
The BBC Primary History page fantastic information about Ancient Greece.
The BBC 'Big Ideas That Change The World - Democracy' series presented by British ex MP Tony Benn is some seriously interesting viewing - professional and clearly delivered. Is more suitable for upper students.
A concise and appropriate Australian video discussing the birth of democracy is here:
A great 3 minute video introduction to 'Democracy' - (American presentation of Ancient Greece, active citzenship, foundations for democratic government, majority rule with minority rights, constitution, right to vote.)
Finally, a fun 1945 Encyclopedia Brittanica presentation on 'What is Democracy.' Enjoy!