This year’s clashes between protestors and the police from Portland to Atlanta to Kenosha are the latest flashpoints in the long history of policing in America. While the police today emerged from a hodge-podge of national and international iterations, one of the United States’ earliest and most storied forces, the New York City police, offers modern Americans a lesson in the intractability of problems between the black community and the officers sworn to uphold the law. That long history is both bleak and demoralizing. But this past also reminds us that real change will only happen by learning from the collective American experience, one in which those who supported systems of oppression were met by others who bravely battled against them.
As the nation’s most populous city for most of its history, New York has been uniquely affected by this dynamic. In the decades before the Civil War, when Gotham’s police force was becoming regularized and professionalized, Manhattan routinely erupted in riotous violence over the very meaning of equality.
Answer: emancipation proclamtion gave the union the mortal high ground ,an increase in relations with European power, and a potential large new segment of manpower ripe for recruitment
