The three important findings are that Lee Harvey Oswald was the only shooter and that he acted alone, that Governor Connally probably had been wounded by the same "Magic Bullet" that killed Kennedy and that Jack Ruby had acted alone in the murder of Lee Oswald.
In short, The warren commission concluded that Lee Harvey Oswald acted alone.
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Answer:
the republican party mostly held power in the south and wanted to solidify its hold there. This meant that they protected pro-slavery laws and the interests of whute southerners.
I believe this is true but I'm not completely sure.