How many times has the us congress declared war?
No context provided
How many times did the US Congress declare war, for separate wars?
5
No context provided
How many times did the US Congress declare war, counting each country separately?
11
Declaration of war by the United States
https://en.wikipedia.org/wiki/Declaration%20of%20war%20by%20the%20United%20States

The United States has formally declared war against foreign nations five separate times, each upon prior request by the President of the United States.
Declaration of war by the United States
The only country against which the United States has declared war more than once is Germany, against which the United States has declared war twice (though a case could be made for Hungary as a successor state to Austria-Hungary).
Declaration of war by the United States
The United States has formally declared war against foreign nations five separate times, each upon prior request by the President of the United States. The only country against which the United States has declared war more than once is Germany, against which the United States has declared war twice.