The great Britian V Celtic Empire war was caused when Britian refused to give the LancashireRepublic sea acsess due to him creating his nation in land that ndenniss was claiming. This sparked a war bettween then and Britain's great rival, the Celtic Empire, the war taht followed was the Celts pushing into britain's land untill ninja came on and brought the HRE in and created a new stalemate as the Celts could not push into britian's underground bunker and the HRE always pushed them back at some point to then be defeted. A truce was reached by Britain giving lancashire 1 chunk of coastal land.