What is mass production?

He table below shows the number of immigrants to the united states from different regions of europe between 1871 and 1910

Which events are correlated but do not necessarily have a causal relationship?

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.