GADM, the Database of Global Administrative Areas, is a high-resolution database of country administrative areas, with a goal of "all countries, at all levels, at any time period." Although it is a public database, GADM has a higher spatial resolution than other free databases, and also higher than commercial software such as ArcGIS. Those sources are commonly use to complete data analysis with data visualisation such as data plots, choropleth map, etc. The database is available in a few export formats, including shapefiles that are used in most common GIS applications. Files for use with the data analysis language R are also available. More information...
According to PR-model, gadm.org is ranked 343,698th in multilingual Wikipedia, in particular this website is ranked 58,524th in Spanish Wikipedia.
The website is placed before danielyule.com and after czzx.gov.cn in the BestRef global ranking of the most important sources of Wikipedia.
