Say that humanity was lost in a war against alien invasion (denefasan). Another advanced alien (not the one that attacks them, say Aucafidian) which had built an outpost on earth, then decides to spare some of them, and transfers about 2.6 billion humans (randomly selected) off-planet, to another earth-Iike planet in sun-like star, approximately have the similar axial tilt (of around 20 degrees), and is terraformed (basically was aucaformed by the former alien, but the biosphere is capable to support earthen life as nice as aucafidian life). It has similar geology as of earth, except that the planet is younger (bonus question: will it make the planet more active geologically?). The planet is populated with earthen structures (buildings, infrastructures, both fractally generated, and, whole back up of the internet archived by alien servers) in approximately sufficient quantity to support 2.6 billion humans. Say humans didn't bring anything precious other than their clothes and basically anything they could hold in their pockets, bags that they might carry, but consider it wouldn't be that much as at the time of exodus they were at war. They were left on the planet with 100 years of protection by the alien from another possibly hostile aliens that might attack humanity. Tech level is at near-future (say, around 2030s).
- Will humanity be capable on resuming their society? How would it affect their society at large?
- Will it capable on recovering their economy?
- Will nation governments (suppose some is also transferred to this new world) would re settling their nations? Or would United Nations (or what remains of it) assuming the role of world government (probably temporarily)?
Note 1: also, is this question too broad? Should I splits this question to multiple question posts? Please comment on it, so i could fix it before the question is put on-hold.
Note 2: they might be taken randomly, but they're not placed randomly on the new world, they were put on cities build by aucafidian (the architectures were reconstructed by aucafidian)
Note 3: Question number four that asks for continuity is removed, and is to be reposted as independent question to keep the scope of this question narrow.