Which religion developed over a long period of time with no specific leader?

Taoism is a religion that developed over a long period of time in China, evolving from various philosophical traditions and folk beliefs without a single specific leader. Its principles, rooted in the teachings of ancient texts like the Tao Te Ching attributed to Laozi, emphasize harmony with the Tao, or the fundamental nature of the universe. Over centuries, it incorporated various elements, including Chinese folk religion, Confucianism, and Buddhism, making it a complex and diverse tradition.