Why did the steam engines contribute to the air pollution in the 19th century?

the best description of the camp david accords is that it was the first time an arab nation had officially recognized the nation of israel.

according to the quotation from booker t. washington's 1895 atlanta compromise speech.

in the great leap from slavery to freedom . . the masses of us are to live by the production of our hands . . we shall prosper . . as we learn to dignify and glorify common labor.

washington believed that  hard work had its own kind of dignity.

explanation:

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