No party system is ideal for all countries and all situations: 1. No party system comes by choice. It evolves over time depending on each country's history. 2. Social and regional divisions play a major role in the evolution of a party system. The diversity gets reflected in the system. 3. Party systems don't change easily because it depends on the society of a country and its political history. Hence new systems can also come up with time. 4. For example, China has a one-party system and the USA has a two-party system. Some countries including India have a multiparty system. 5. India adopted a multi-party system because of its social and geographical diversity and the colonial history.