: This is the most popular tool for creating imperialism maps. You can use their "War Games" or "Subdivisions" templates (like US Counties or European Regions) to create a base.
Use a random name picker wheel to select two teams. Spin again to see who wins the match, and color the map accordingly.
To visualize the power dynamics at play, I've created an editable map using Google My Maps. You can access and edit the map here: [insert link to editable map]