Thank you all very much!
In the end I clipped it (it took my time because I was doing it wrong) but it worked perfectly, so thanks Lazur

Hello! I am making a map about the Cartgainian conquest of Spain but I am wondering if there is an easier way to do this: I want to adjust the darker area to the limits of the land in the south and the east. Is there any other way of doing this apart from drawing it exactly over the border of the la...