Anthropological research reveals that most ethnic groups and nations are recent historical creations, our connection to people within these groups is relatively new, and our shared traditions are recently invented. in addition, most members will never meet each other. therefore, most nations today are:

1) achieved communities
2) conglomerates.
3) empires.
4) imagined communities.
5) nation-states.

Imagined communities

Explanation:

The concept of Imagined communities was developed in 1983 by historian Benedict Anderson, the concept of imagined communities refers to the fact that a nation "is imagined because the members of even the smallest nation will never know most of their fellow-members, meet them, or even hear of them, yet in the minds of each lives the image of their communion"

So, members of most ethnic groups and nations will never know each other face to face and yet, they identify themselves as part of a nation with common characteristics (and this is where nationalism appears).

Therefore, according to this concept, nations are a socially constructed group, imagined by people who perceive themselves as part of the group.

Thus, we can conclude that the question regarding anthropological research refers specifically to Imagined communities.