I put this in beginner because I need an easy to understand answer and don't know much.

Space can expand so isn't expanding bending?

Also I want to make sure someone doesn't interpret this to mean that bending = expanding. For all I know bending = expanding could be the same thing or completely different. Is it it the same? I guess bending needs mass. Does expansion of the universe need mass? I always thought the answer is yes. Don't really know why. Can someone explain this to me.

But even when space expands and bends the fastest something can move is a gravitational wave. Gravitational waves travel at the speed of light. Just stating something I understand.

Maybe the faster than light expansion is the cause of quantum mechanics. Is that possible?

Also I have another question. If space can bend faster than light could that explain the quantum nature of the universe? Example quantum entanglement etc. Or am I mistaken.

I do understand a tiny bit about Einstein theory but not very much and none of the math. I understand bending of space. Light is fastest something can travel and make a accurate prediction. That is about all I understand about relativity. Take that into consideration when answering the question.