Answer:
Despite geographical barriers, some African states were able to maintain diplomatic and cultural contacts with the broader Afro-Eurasian world.
Explanation:
The continuity of the diplomatic relationships allow trade during 1200-1450 which help the development of what is known as the Swahili coast market.
This Market integrated the following countries:
Kenya, Tanzania, Mozambique, Somalia, Comoros.
The trade had the following dynamic, African countries would sell gold, ivory, species and the Arabs, would sell finished products from china and species from India.
This trade with eurasia was vital in this period to develop the african nations.
The development of agriculture occur circa around 8000-6000 years ago. It was a time where many nomadc population begin to settle in a place, thus effectively starting the civilization as we know now. it was a huge shift for humanity and it was probably one of the most important, if not <em>the</em> most important achievement in human history.
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It was quickly accepted as the preferred food source by people living in settlements because it could be planned and organized, thus helping people reaching a balance easily and preventing them from being dependent from the results of hunt and gathering. it was a safe and sicure way to assure food for everyone.
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<span>The end of Mexican regulations on slave importation.</span>