Stuck in Magical Bronze Age

Isekai. Modern guy gets transported to fantasy world. But what is the twist for this one? It’s not your standard medieval world with castles and kings. The history of humanity has just begun. But it seems that with magic those people got lazy… so lazy in fact that they refuse to innovate.The great goddess of their world decided to help them by teleporting a class of modern college students. And so their journey begins!