China's population aged 16-60 fell by 4.9 million in 2015, the fourth straight year of decline: https://t.co/7M4hsAMwCC
RT @AntoineVanner: 1780: the carronade, a murderous close-range weapon that would change the odds in many subsequent naval battles, made
October 25, 2020
RT @AntoineVanner: 1780: the carronade, a murderous close-range weapon that would change the odds in many subsequent naval battles, made it…