If we are talking about legacy of each culture in a general sense..? Then the greatest legacy a culture could have is a culture that doesn't fade away throughout time but instead grows and changes through history. A Culture that will be remembered because of the impact it had on the world.
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The excerpt mentions central government and the states but does not speak (except by mentioning) of executive branch or amendments, so we reject options 2) and 4).
Among options 1 and 3: 3 speaks of central government having the power over the states, which is the opposite of what the text says: it stresses how much power should stay with the states.
So the correct option is 1)
the civil right acts of 1964 put an end to segregation by law but lack to end segregation.- hope this helps