(The hunter-gatherers continued to exist but they retreated into remote areas). They cleared an area of rain forest by burning it then grew crops.
After a few years the land would be exhausted and the farmers would clear a new area.
However within a few years the old area would become covered in vegetation and would become fertile again. They made tools from bronze and iron and they settled along the coast and along rivers.
They lived partly by fishing, partly by growing crops. Malayan civilization was heavily influenced by India. The religions of Buddhism and Hinduism were also introduced into Malaya at that time.
It offers numerous functions and many of the same options as paid versions will provide.