The Kansas-Nebraska Act was supported by and seen as an advantage to white people in the North
border ruffians from Missouri.
supporters of slavery in the South

supporters of slavery in the South

Explanation:

Why did Southerners support the Kansas-Nebraska Act? The Popular Sovereignty clause in the Act meant the territories might allow slavery and enter the Union as slave states. The population increased greatly as settlers flooded into the territory from both free states and slave states.

the correct answer is history and tradition.

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