Why do historians use tools such as maps, timelines, and technology to them conduct their work?

About how many european immigrants were processed at the facilities on ellis island

Brainliesttt ! : ) -global military, political, and psychological responses to terrorism?

The picture below shows president richard nixon and the first lady standing before the great wall of china in 1972. they are smiling - as are the chinese with them. when this picture was shown on american television, americans were aware that it was a historic moment. what are two reasons why this moment was important for both china and the united states?