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Explanation:
Surgical robots are not operating independently. Yet, what they are doing is increasingly helping surgeons to operate more effectively. Although the current generation of robots are highly specialized machines, they are still controlled by a highly skilled doctor.
Answer:
Lincoln said that the war may need to last long enough to balance the evils of slavery. Slaveholders have gained great wealth from 250 years of unpaid labor by slaves, and the war might last until all that wealth has been lost.
Explanation: