Which executive agency would most likely investigate cases of espionage? the central intelligence agency the department of state the department of defense the securities and exchange commission

The excutive agency that would likely investigate cases of espionage is the Central Intelligence Agency.  This agency mainly provides intelligence for the President and the Cabinet of the United States.

It is well known as CIA and it is a civilian foreign intelligence service of the federal government which is in charge with gathering, processing and analyzing national security information from  the world.

to extend a country’s power and influence

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.