Answer:
they could use the number system to develop equal currency and easier trade.
Explanation:
The way that camels help increase trade across geographic barriers of northern Africa is : Camels helped with transportation.
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then, we still have not developed machine based transportation
vehicles, so we rely on ships and carts. Since the horses are unable to
cross pass the desert, most of the animals that is used on northern
Africa trade were camels.
In 1776, America declared independence from Britain. Five years later the congress ratified the first national constitution.
