What is geographical location of Java? What was its condition in 1600? Which was its famous community and why?

(i) Java is in Indonesia.
(ii) The population of Java was 3.4 million in 1600.
(iii) There were many villages in the fertile plains, but there were also many communities living in the mountains and practising shifting cultivation.
(iv) Kalangs was its famous community. It was a community of skilled forest cutters and shifting cultivators. They were so valuable that in 1755 when the Mata ram kingdom of Java split, the 6,000 Kalang families were equally divided between the two kingdom. Without their expertise, it would have been difficult to harvest teak for the kings to build their palaces.