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During that time everytime a state was added a slave and free state would be added to keep the senate fair.
The longterm effect that the U.S. saw as a result of "Bleeding Kansas" was that The North and South became more divided over the issue of slavery.
What did Bleeding Kansas cause?
As a result of the event known as Bleeding Kansas where there were violent clashes between pro-slavery campaigners and abolitionists, the nation became more divided over slavery.
The issue became so heated that in the end, Civil War eventually broke out between the North and the South.
In conclusion, option D is correct.
Find out more on Bleeding Kansas at https://brainly.com/question/1352175.