Answer:
The correct answer is "an electoral realignment."
Step-by-step explanation:
When one party becomes dominant after replacing another party that has dominated national politics for a lengthy period of time, it often results in an electoral realignment. This refers to a significant shift in the balance of power between political parties, as voters begin to support the new dominant party while abandoning the previously dominant one.
Electoral realignments can occur for a variety of reasons, such as changing demographic trends, economic conditions, or political scandals. They often represent a major turning point in the political landscape, as the new dominant party may be able to implement significant policy changes and maintain its dominance for many years to come.
A divided government occurs when different political parties control different branches of government, such as the presidency and the legislature. This can lead to political gridlock and make it difficult for the government to pass major legislation.
Government and democratic participation are important concepts in political science, but they are not directly related to the question at hand.
The phrase "appealed to disaffected white voters in the South" does not describe a specific political phenomenon and is not directly related to the question at hand.