Answer:
They have in common the fact that they are minority groups within internationally recognized countries, and that they have active separatist movements.
Step-by-step explanation:
In the case of Kosovo, they are Albanians living in Serbia, and they declared independence in 2008, however, this declaration was not accepted by Serbia, and many other countries do not recognize Kosovo as a legally independent country.
The Scots held an independence referendum in 2014, but the option to remain part of the United Kingdom narrowly won.
Finally, the Basques have two main political parties: the Basque National Party, which does not seek independence, and Bildu, which seeks independence. Both parties have similar electoral power.