section_path: Characteristics/Ethnicity
section_name: Ethnicity
paragraph_text: Ethnicity
  
  Human ethnic groups are a social category that identify together as a group based on shared attributes that distinguish them from other groups. These shared attributes can be a common set of traditions, ancestry, language, history, society, culture, nation, religion, or social treatment within their residing area. There is no generally accepted definition of what constitutes an ethnic group, and humans have evolved the ability to change affiliation with social groups relatively easily, including leaving groups with previously strong alliances, if doing so is seen as providing personal advantages. Ethnicity is separate from the concept of race, which is based on physical characteristics, although both are socially constructed. Assigning ethnicity to a certain population is complicated, as even within common ethnic designations there can be a diverse range of subgroups, and the makeup of these ethnic groups can change over time at both the collective and individual level. Ethnic groupings can play a powerful role in the social identity and solidarity of ethnopolitical units. Ethnic identity has been closely tied to the rise of the nation state as the predominant form of political organization in the 19th and 20th centuries.