Medicine and new technologies
The development of the reproductive systems begins soon after fertilization of the egg, with primordial gonads beginning to develop approximately one month after conception. Reproductive development continues in utero, but there is little change in the reproductive system between infancy and puberty.
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In the thirteenth century, Ma Tuan-Lin, a Chinese historian, first recognized social dynamics as an underlying component of historical development in his seminal encyclopedia, General Study of Literary Remains.
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