The three main feature of Indian democracy which make it a federal country are : 
1. The power is equally distributed among the both state and the central government. By this the problems of the people can be solved easliy. 

2. The Indian government works in the way where the control of the places is divided into parts. This helps out in sorting of things easliy and this method works out really awesome. As we are following it we know how well it works. Therefore this would be one of the feature of making our country a democratic country. 

3. the constitution of india is the most important feature that makes india a democratic country by seeing everyone on the equal grounds with equal rights to live on their own without interpreting with their religion, cast etc.