What condition is necessary in establishing a democratic nation?

You really need a few.





You need an educated and informed electorate-people need to be able to make decisions based on reliable and timely information. They need to be aware of the issues.





You need a little alturism in the electorate as well-people need to accept some unpleasantness for the common good, be prepared to make some individual sacrifices for the good of the whole community.





The electorate needs to be interested and participate in the political process. If they aren't looking out for themselves or are apathetic, they'll get walked all over.





IMHO the last true democracies were the anarcho-syndicalist collectives in Catalonia and Republican Spain during the Spanish Civil War.