How Cinco De Mayo Prevented the Confederacy's Win in the Civil War (https://www.businessinsider.com/how-cinco-de-mayo-prevented-the-confederacys-win-in-the-civil-war-2022-

On May 5, 1862, the Mexican army defeated the French in the Battle of Puebla. This prevented French Emperor Napoleon III from supplying weapons to the Confederacy during the Civil War. Napoleon III had planned to trade weapons for cotton with the Confederate states during France's invasion of Mexico. https://www.businessinsider.com › ... How Cinco De Mayo Prevented the Confederacy's Win in the Civil War (https://www.businessinsider.com/how-cinco-de-mayo-prevented-the-confederacys-win-in-the-civil-war-2022-5#:~:text=On%20May%205%2C%201862%2C%20the,during%20France's%20invasion%20of%20Mexico.)