How and why did the Vietnam War divide America?

Opposition to the war in the United States bitterly divided Americans  even after President Richard Nixon ordered the withdrawal of U.S. forces in 1973 Communist forces ended the war by seizing control of South Vietnam in 1975, and the country was unified as the Socialist Republic of Vietnam the following year.

Vietnam would be divided by a demilitarised zone (the DMZ), with the French withdrawing their forces from Vietnam north of the zone and the Viet Minh withdrawing their forces from the south. ... Before long Diem's authoritarian regime was challenged by local communists, backed by the regime in North Vietnam.

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1) the andrew carniage's purchase and renovation of skibo castle have been very good and auspicious for the local people of dornoch firth, scotland because this is a turistic attraction for many people who would want to know the castle, the local people would take advantage about this.

2) yes, it could.