sentences:  Indo-Burma was one of the first places where humans developed agriculture, and has a history of using fire to clear land for agriculture and other needs.The need for agricultural products has increased in recent years, with the expansion of both human populations and markets.This has contributed to widespread forest destruction; tree plantations (teak, rubber, oil palm) have replaced large areas of lowland forest, while coffee, tea, vegetable crops and sugarcane plantations threaten montane and hill forests.