Lewis Henry Morgan has been considered the founder of American cultural anthropology or, more generally, as the "father of American anthropology". Unlike many anthropologists of the time, Morgan was not an “armchair” anthropologist. He went into the field to learn about other cultures. As noted by Kinton, Jacob Bachofen and John McLennan influenced Morgan (1974:4). Morgan began his work with the extensive ethnographic study of the Iroquois. Although, as Langness informs us, the driving force behind Morgan's "devotion" to the camp was due to a chance meeting with a young, educated Seneca Indian, named Ely Parker (1974:20). Morgan is best known for his work on kinship and social structure. He also fought to protect various Indian causes and to preserve Indian traditions. Lewis Henry Morgan's work went beyond the fields of anthropology and ethnology. His works on social structure inspired the writings and ideas of Karl Marx and, through Marx, Frederick Engels (Stern 1946). Morgan's first major work was League of the Ho-de-no-sau-nee, or Iroquois, written in 1851 by many people. consider it the “first scientific study of an American Indian tribe” (Meggers 1946). Morgan had studied Iroquois culture with the help of Ely Parker. Indeed, Morgan dedicated the book to Parker stating that the book is "... the fruit of [their] joint researches" (1851). During his research, Morgan noticed differences between the European kinship model and the Iroquois kinship model. It is this “discovery” that leads to the expansion of the idea of ​​kinship structure in later works, such as Ancient Society. In his 1877 book Ancient Society, which was a global survey (Kinton 1974:4), Morgan breaks humanity down into three broad categories. Morgan states… halfway through the article… more later, but his position on religion has produced one of the most cited (probably to an extent fallacious) ethnocentric statements in anthropology: The growth of religious ideas is surrounded by such inherent difficulties which may never receive perfectly satisfactory exposure. Religion has to do so extensively with the imaginative and emotional nature, and consequently with so certain elements of knowledge, that all primitive religions are to some extent grotesque and unintelligible. (1877:5) It is believed that Morgan thought this way about religion and did not put much effort into it because his model did not take the "mind" into account and therefore religion did not fit (Langness 1974:24). Although some of Morgan's ideas have been discredited or revised, what he accomplished, like his work on kinship systems, survives to this day and is still a topic of discussion.