If the world we live in is a water planet, or a planet with little land, would humanity be able to survive and if they could, can they reach the type of civilization or society we have. Like able to create buildings or cities on water (that might be a stretch of what they could but just a theory)
The Pacific Island societies managed it. They didn't get to our level, but were empire building at the time of European contact.
The main blocking point for them was being mostly volcanic Islands the natural resources for metal working etc, were absent. But there's no reason your people couldn't manage it if the raw materials exist. It's just a spark of genius from a single person that gets tech started in a new way. Polynesians were highly advanced in many ways, well beyond the Europeans.