This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionRomansh language spread.svg
English: This map depicts the changes in the spread of the Romansh language throughout history. The Romansh language is one of Switzerland's four national languages.
Svenska: Den här kartan visar förändringarna i utbredningen av rätoromanska genom åren. Rätoromanska är ett av de fyra nationella språken i Schweiz.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.