Demographic dividend is a dynamica in demographic that accurs due to the change of demographic structure based on age. where the number of productive population is higher than un-productive populatian. Indonesia has experiancing this conditian since 2015 untill 2035. Although west Sumatera is not fully experiancing demographic dividend. https://www.spidertattooz.com/Dystopian-Wars-Empire-Starter-Set-Faction-Battlefleet/