population Arig. Rev 10K YA; 工业、农业、国防、科学技术现代化
populous China/US 9M km²; India 3M; Bangladesh 130K
population_density 90% Northern hemisphere - Laurasia 75% land/Gondwana 200MYA commuter train in Bangladesh Bangladesh's first high speed commuter train DEMU launches
demographic Demographic=population statistics; crude birth rate=1000/year. Inf mortality=1st year; total fertiility=kids lifetime
High death rate: old people
===