Which of the following historians has organized her study of the past based on the category theme

A historian creates a graph of the economic strength of various empires throughout history.

Explanation:

got it correct. (a-pex)

the british won and the germans couldn't invade great brit

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.