...We cut her off from the opportunity of improvement... 
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
... why should they not emulate each other by promoting this improvement in the condition of the human race? ...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
...The latter had made similar representations; but yet had allowed, that much improvement might be made in their condition...
Thomas Clarkson 「The History of the Rise, Progress and Accomplishment of the」
... Commerce and intercourse with whites has made the Mpongwe, once the rudest, now one of the most civilized of African tribes; and, upon the whole, there is an improvement...
Richard F. Burton 「Two Trips to Gorilla Land and the Cataracts of the Congo Volume 1」
...Over a space of several miles, the country appears to be in a high state of improvement...
Horatio Bridge 「Journal of an African Cruiser」
...He was a man of superior physical strength, and from all outward appearance, he possessed qualities susceptible of ready improvement...
William Still 「The Underground Railroad」
...For one who had enjoyed only a field hand's privileges for improvement, he was not to be despised...
William Still 「The Underground Railroad」
...To the slave he had been a true friend, and had labored faithfully for the improvement of his own mind as well as the general elevation of his race...
William Still 「The Underground Railroad」
...It is enough, for the present, to say, that he was no improvement on Mr...
Frederick Douglass 「My Bondage and My Freedom」
... My mother and the other members of my family were, of course, much rejoiced to see me and to note the improvement that I had made during my two years' absence...
Booker T. Washington 「Up From Slavery: An Autobiography」
...Such changes will bring farlarger results than the mere improvement of our Negroes...
Booker T. Washington, et al. 「The Negro Problem」
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