When did the Vietnam War begin?
1955
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1853
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1839
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1853
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1945
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1956
1839
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1861
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1853
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1945
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1862
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1839
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1861
1853
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1965
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1862
1953
1839
1861
1945
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1956
1853
1965
1962
1898
1964
1961
1950
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1953
1862
1945
1963
1883
1956
1839
1965
1861
1962
1851
1964
1961
1950
1868
1853
1960
1898
1953
1968
1945
1963
1956
1862
1965
1962
1964
1883
1961
1950
1839
1960
1861
1946
1851
1953
1868
1853
1968
1898
1945
1950s
1963
1956
1849
1965
1962
1964
1961
1950
1960
1862
1946
1883
1953
1839
1861
1968
1863
1945
1851
1963
1868
1956
1853
1965
1962
1898
1950s
1964
1961
1950
1960
1946
1953
1862
1968
1945
1963
1883
1956
1839
1849
1965