I know Hyper-V is type 1 or native hypervisor, meaning it sits on top of hardware and doesn't require an operating system, i.e. talks to the hardware through the ISA interface).
But I don't understand why does it require hardware assisted virtualization? Does it mean Hyper-V is not full native hypervisor because it requires another part (put in hardware)? Does every native hypervisor require hardware virtualization?