Which responsibility were assigned to the federal government under the article of confederation?

The central government under the Articles of Confederation was extremely limited in power--having only the power to deal with foreign relations such as signing treaties and declaring war, and dealing with the local Native tribes. 

The correct answer is b

Is there a passage that comes with this question or should i know this right off the bat, because if it is, i probably have short term memory loss or college is too stressful