Focusing on Indonesia's economy, this report assesses five economic corridors within the Indonesia-Malaysia-Thailand Growth Triangle (IMT-GT) and explores ways to boost their development, as well as potential advantages of a new, sixth corridor. The IMT-GT comprises five economic corridors that are key geographic zones for its subregional economic cooperation. Analyzing data on physical connectivity, cross-border trade, and value chains-in the context of Indonesia's development strategies--this publication reviews the four economic corridors directly connecting to Sumatera. The report...