Answer:
All of the above
Step-by-step explanation:
The location of Indonesia is very rare. It is very rare to find a country that is fully based on island, let alone have 230+ million people. It's diversity and the fact that different languages and dialects are spoken on different languages is also shocking. It's climate won't help it reunite either, because to unify you must make sure everyone is equal, and have many types of climates puts that in jeopardy.