| http://www.w3.org/ns/prov#value | - History of Humanity: From the seventh century B.C. to the seventh century A.D. - Google BooksSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Book SearchBooksbooks.google.com - The period covered is marked by several turning-points, such as the spread of iron technology, the introduction of innovative irrigation systems and the development of new forms of urbanization.
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