<span>Ghana dominated the region between about 750
and 1078. The other states in the region at that time included Takrur to
the west, the Malinke kingdom of Mali to the south, and the Songhai Empire centred on Gao in the east.</span>
Because they do not possess the same vocal cords arrangement as Humans.
<span>Barking cause lower amount of muscle strain in Vocal cords compared to when humans are yelling.
</span>This make dogs able to barks endlessly without having to create any damage on their vocal cords.
B. Not as accurate as as globe
<span>this theory is referred to as: Transformation
In choosing an economic system, transformation refers to creating an adjustment to an existing economic system, by taking the positive aspects of other existing economic system.
For example, a communist country that choose to give more freedom to the private sector in order to attract economic growth</span>