Germany, Italy, Switzerland, Belgium, Luxembourg, Andorra, Spain, and Monaco. If you mean who has the biggest border with them than its, either Spain, Italy, or Germany. Mostly Germany but i'm not too confident.
Belgium, Germany, Italy, Luxembourg, Monaco, Spain, Andorra and Switzerland countries that border France.
Explanation:
I believe that Spain is the country that borders France the most. Switzerland borders France for 306.05 miles (573 km). Germany borders 278.37 miles (448 km). Belgium borders France for 390 miles (620 km) long. Italy for 320.1 miles (515 km). Luxembourg for 45.36 miles (73 km). Monaco for 2.49 miles (4 km). Spain for 407.8 miles (656.3 km). Andorra for 35 miles (57 km)
