What are the main features of an ethnic group?

Ethnicity and belonging to it is determined by the presence of general categories. There are several such categories. First, it is a language that unites a social group called ethnos. The second category is the culture of this people and their way of life. Equally important is the presence of a common historical past, which includes concepts such as traditions, rituals, signs, and the like. Only in the presence of these categories can an ethnos take place.