What was the effect of the invention of the cotton gin on the united states in the first half of the nineteenth century?

a- the focus of economic activity in the south shifted from agriculture to industrial production.
b- the south became more dependent on slavery, deepening the differences between the south and the north.
c-industrialists from the north migrated to the south in large numbers to set up textile mills and shipping firms.
d- large numbers of plantation workers in the south lost their jobs and moved north in search of jobs.

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.

a. "how old man winter was driven back” and “ormuzd and arimanes"