I remembered before Buddha pass onto Nibbana when his physical body comes into a dead line, he mentioned about what is Dhamma and what is Not Dhamma. So basically everyone know what is and what is not Dhamma.
My question is: Before Siddhatha came to become a Buddha, he trained hard. And right before that, there are of course few religions and believes. One of it was asceticism and another was Hinduism. So which means at that time, there existed Dhamma, but not the Dhamma of liberation. When there's the time Dhamma is forgotten by people and there will maybe born a Buddha to turn the wheel right? But Siddhartha Gotama Buddha born in the Dhamma existing world. So... can anyone answer me why is it like that?