In "An Army Corps Like No Other," why does the author describe the surveying trip in 1857?

Which statement tells an advantage george washington had in his first term as the first president of the united states?

Don’t mind the already marked answer but taking it now

Me! these questions are based on american people in the south essential questions: question 1: for what reasons will one group of people exploit another?focus questions: question 1: what influenced the development of the south more: geography, economy, or slavery?question 2: what were the economic, political and social arguments for and againsts slavery in the first half of the 19th century.