Which of the following historical developments during the nineteenth century best supports potter's argument about the underlying cause of sectional conflict?

a. the expansion of voting rights for white males
b. the increase in economic opportunities in the west
c. the influx of irish and german immigrants to northern cities
d. the increasing prominence of the whig party in national politics

Answer is B. the increase in economic opportunities in the west.

Explanation:

Sectional conflict or crisis can simply be explained as crisis limited to a particular region, territory or community.

A typical example of a sectional crisis or conflict was the one that occurred in United states concerning slavery in 1850s, where a debate ensued whether to allow the expansion of slavery into the western region.

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the united states constitution is the supreme law of the united states. the constitution, originally comprising seven articles, delineates the national frame of government. its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral congress; the executive, consisting of the president; and the judicial, consisting of the supreme court and other federal courts. articles four, five and six embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. article seven establishes the procedure subsequently used by the thirteen states to ratify it. it is regarded as the oldest written and codified national constitution in force.