<human>:  Why did the French lose at the Battle of Salamanca?
<bot>: The French lost because the Spanish had better tactics and better equipment. The Spanish had a much larger army and were able to use their cavalry to great effect. The Spanish also had cannons, which were used to great effect. The Spanish were able to hit the French with cannonballs, which caused many casualties. The French also suffered from poor leadership, and many of their soldiers were not disciplined. The French army was also outnumbered.