Final answer:
Joan convinced the French of her mission through military success, bravery, and her unwavering faith.
Step-by-step explanation:
Joan convinced the French of her mission by demonstrating her military prowess and inspiring the troops with her bravery and determination. For example, she successfully led her army to several important victories against the English, such as the Siege of Orléans. Additionally, Joan's unwavering faith and belief in her divine mission captured the hearts and minds of the French people, who saw her as a symbol of hope and a leader chosen by God.
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