<span>black codes were designed to restrict freed blacks’ activity and ensure their availability as a labor force now that slavery had been abolished.</span>
On January 25, 1863 the Governor of Massachusetts received the authority to recruit black troops. The 54th Massachusetts Volunteers was the first black regiment from the North - and also a fine fighting unit.
<span>"It presaged the full-scale organization and employment of Negro soldiers. It initiated the new Negor soldier policy of procedding not by the the parceling out of authority to selected individuals and states but by decree and direction of the War Department acting through the army. This step was the great turning point in the development of the movement to arm the Negro as a soldier."</span>
As far as I now, Marcus Perpena (the consul of 92 BC) was said to have lived to 98. I found this on a website called Quora. (not trying to advertise)
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It had a very positive impact because the 1920's was when many new technologies were introduced, one example being the the assembly line, which made many industries more productive and profitable.
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Answer: A historian studies each of the major world powers between the years 100 BCE and 100 CE
Explanation: your Brain