Answer:
The French ultimately won the Hundred Years' War due to a combination of factors. One important factor was the ability of the French monarchy, led by King Charles VII, to unite the country and rally the people behind a common cause. The French also benefited from the support of powerful allies, such as the Burgundians and the English rebels known as the Lancastrians, who helped to undermine the English cause.
In terms of military strategies and tactics, the French victory can also be attributed to the effective use of artillery and the development of new weapons, such as the couillard, which was a type of cannon that could be easily moved and used to break through English fortifications. The French also made use of guerrilla tactics and surprise attacks, which helped them to gain an advantage over the English.
As for the Siege of Orléans and the Battle of Castillon, both of these events were important in the outcome of the war, but it is difficult to say which was more significant. The Siege of Orléans was a major turning point in the war, as it marked the beginning of the French recovery and the end of English dominance in France. The Battle of Castillon, on the other hand, was the final major battle of the war and effectively ended English control in France, but by that point, the outcome of the war was already largely determined.
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