The new spanish troops drove the british out of the mouth of the mississippi at what major battle?

waterloo

baton rouge

concord

king's mountain

The New Spanish troops drove the British out of the mouth of the Mississippiu at the Battle of Baton Rouge.

Explanation:

The Battle of Baton Rouge was fought between 12 and 21 September 1779 near Baton Rouge, Louisiana, as part of the events of the Anglo-Spanish war, framed in the American Revolutionary War.

The Spanish forces, led by the governor of Louisiana Bernardo de Galvez y Madrid, placed the blockade in the city of Baton Rouge, the second most important center of the then British colony of western Florida and defended by a garrison under the command of Lieutenant Colonel Alexander Dickson; cut off and overwhelmed, the British forces finally had to capitulate, leaving the city in the hands of the Spaniards.