The line representing administrative boundary, which are recognised by governments or some other organizations for administrative purposes.The administrative boundaries range from large groups of nation states to small administrative districts and suburbs. They are filtered and simplied according to the tag 'admin_level', which goes from 1 to 10 with an indication of every level of importance. For many areas, the information on where exactly the border is, is not freely available to use. NOTE: As OSM only has “boundary ” showing up what type of the line, such as “Aministrative”,“National_Park”, “maritime” etc. It doesn't have column for determining “disputed”, we consider use NE data as country data for higher zoom levels.

Indicates if the boundary is controversial. ‘true’ means “disputed”.

Indicates the administrative level of importance of this boundary.

Indicates the boundary is the maritime border, in other words, the boundary is on the water, such as sea, ocean etc.

The parent administrative area of the boundary.