Seafloor spreading and continental drift are believed to be caused by

Geography

1 answer:

timofeeve [1]3 years ago

3 0

Answer:

Convection current

Explanation:

The seafloor spreading refers to the splitting of the oceanic crust in two opposite direction, resulting in the expansion of the ocean basin. And the continental drift refers to the large scale movement of the continents from one location to another, over the vast ocean water bodies.

Both these processes are believed to be caused by the convection current, that generates in the mantle portion of the earth. In the mantle, the magma being less dense, rises from the interior of the earth, and as it rises upwards, it forms convection cells, that forces the plates to move in different directions sharing a type of plate boundary. This entire process is known as the plate tectonic movement.

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erik [133]

The basis of Ghana's wealth was the trade, mainly of gold and salt.

Explanation:

Ghana was a an empire in West Africa, or rather in the western Sahel. Even though it was not a very large empire, it was very wealthy, and it had very big power in the region. There are two main reasons as to why Ghana managed to became powerful and wealthy:

excellent location
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The excellent location, between North Africa and and West Africa, right on the trade routes between the two regions, contributed to Ghana having huge advantage to gain wealth. This was used, and Ghana developed the trade even more between the two regions, and it wisely used its goods.

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