Who was the early anthropologist who saw religion as rooted in a belief in spirits and worship of them?

The early anthropologist who viewed religion as rooted in a belief in spirits and their worship was Edward Burnett Tylor. He is known for his work "Primitive Culture," where he proposed that animism, the belief in spiritual beings, was the earliest form of religion. Tylor's theories laid the groundwork for the study of religion in anthropology and emphasized the importance of understanding cultural beliefs and practices.