Ahistorian looks through hundreds of photographs from the terrorist attacks on new york city's world trade center on september 11,2001, try to learn more about the people it affected. which skills would the historian be using?

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )