The answer is a)<span> Trade is a recent development in coastal countries.
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This is an incorrect statement as Trade in the coastal countries of Africa goes back more than a millennium.
During the European colonialism, these countries experienced huge trade growth due to the slave trade and exploitation of natural resources.
Most of these countries had major ports which were used as trading posts, stop-overs and major entry points of West Africa.
After the expansion of the Spanish Empire in South America, trade between the two continents flourished and as late as the 19th and 20th century, European powers were still exploiting natural resources in the region.
Today, the region is growing thanks to billions of dollars of investment from China.
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Hot magma pushes itself to the surface at both divergent plate boundaries and convergent plate boundaries. This magma comes in contact with rocks as it rises to the surface. The magma is hot, heating the rocks around it. As the rocks heat, they change and become metamorphic rocks.
The answer to your question is: D. rainfall and ocean waves.
Looking at both figures shows that rain and the waves have changed the terrain.
