What was the purpose of the homeland security agency

The purpose of the internal security agency was to protect the US territory from terrorist attacks.

Explanation:

The United States Department of Homeland Security is a government organization that aims to protect the nation's territory against terrorist attacks and to act in the event of natural disasters.

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.