Studying History is significant to better understand how two countries were engaged in battle for a long time just to obtain a throne.
One of the numerous examples is the Hundred Years War between France and England, who fought for political reasons from 1337 to 1453. Due to the fact that Britain was becoming a powerful country the French king Philip IV tried to conquer the British territory in France. The answer of Edward III was immediate, he declared war to the France.
Three phases are distinguished where France reacted to two defeats by using cannons. But the situation got worse because Charles VI went mad and France had a vacant throne. Then, France lost the battle of Anzincourt in 1415. After that, a popular movement started in France thanks to Joan of Arc, who conquered Orléans in 1428. Today French people remember her as a martyr because she was burned at the stake.
In the end, Charles VII acceded to the throne of France and led the country to success.