How did Bernard de Gálvez help the patriot cause?

Bernardo de Gálvez, the Spanish governor of Louisiana, provided military support to the American patriots during the American Revolutionary War. He led Spanish forces in capturing British-held forts along the Mississippi River and Gulf Coast, cutting off British supply lines and weakening their position in the South. Gálvez's contributions were instrumental in securing victory for the patriots in the southern theater of the war.