Why did the British rule worsen ethnic division in Malaysia ?

The British also improved public health facilities, which reduced the incidence of various tropical diseases, and they facilitated the establishment of government Malay schools and Christian mission (mostly English-language) schools; the Chinese generally had to develop their own schools.The British in Malaysia turned tin mining into a huge industry towards the end of the 19th-century. Malaysia quickly became the leading exporter accounting for 31% of global production, until the tin market crashed in the 1980s.

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