Except for tin in late 19th century, neither tin nor petroleum dominant in country’s export earnings (nothing like Nigeria’s 95%+ from oil in export earnings)
Even in late 19th century, tin does not seem to have discouraged other exports (encouraged rubber and other activities via railway development and labour supply, although much rubber labour was imported too)
Petroleum does not seem to have discouraged manufacturing exports
Real effective exchange rate (REER) appreciated in 1970s but then gradually depreciated—see next slide
No accessible REER data earlier than 1975