Alcoa had a monopoly in the u. s. aluminum market from the late nineteenth century until the end of world war ii. which barrier to entry was the source of alcoa's monopoly power?

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.