求翻译：二战结束后，自重建时期以来美国的黑人民权问题第一次回到联邦层次的政治舞台。在新形势下，特别是黑人力量和意识迅猛增长的情况下，杜鲁门总统在1946年建立了“民权问题总统委员会”（President's Committee on Civil Rights)。是什么意思？

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After the end of World War 2 period of reconstruction, since the United States since the black people's right to return to the first meeting of federal level political stage. Under the new situation, especially the black power and awareness of rapid growth, President Truman in 1946 established a "ci

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After the second world war, self-building since the United States of the black civil rights issues back to the political stage at the federal level for the first time. Under the new situation, in particular case of black power and the rapid growth of the consciousness, in 1946, President Truman esta

After the second world war, self-building since the United States of the black civil rights issues back to the political stage at the federal level for the first time. Under the new situation, in particular case of black power and the rapid growth of the consciousness, in 1946, President Truman esta