The theee fifths compromise benefited which states?

It benefited the southern states.  

Although slaves couldn't vote, the Southern states wanted to count them for the purpose of increasing their representation in the House of Representatives. The Northern states didn't want to count slaves at all because the South insisted slaves were property and not persons. The Three Fifths Compromise was was just that...a compromise that allowed the South to count three-fifths of the slaves towards their total population which ultimately gave the South greater representation in congress than they would otherwise have had.

Explanation:

whose power in the senate is equal to the power of the speaker of the house?

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