[There were around 10 billion humans in Terra from what you remembered. In other words, there were approximately 100,000 regions at the start of the Train Survival World's terran mass transmigration.]
[From what you know, most of the casualties on the first day were those people who couldn't live without supervision and care, such as those who were really young or really old.]
[Some were disabled or on life support, and the mass transmigration likely ended their lives if they didn't awaken a good enough innate talent to allow them to survive on their own.]
[However, not all died since there were cases of one parent becoming a train conductor with their child instead.]
[In some ways, the Train Survival World might have given a chance for those at the lower ranks of the social hierarchy to rise, given that they awakened a decent innate talent, but it also took the lives of many.]
