For some people, responsibility is the easiest to give. But what is difficult for some leaders is allowing their people to keep the responsibility after it's been given. Poor managers want to control every detail of their people's work. When that happens, the potential leaders who work for them become frustrated and don't develop. Rather than desiring more responsibility, they become indifferent or avoid responsibility altogether.
With responsibility must go authority. Winston Churchill said in an address, "I am your servant. You have the right to dismiss me when you please. What you have no right to do is ask me to bear responsibility without the power of action."
Once responsibility and authority have been given to people, they become empowered to make things happen. But we also have to be sure that they are making the right things happen. That's where accountability comes into the picture.