What is sampling of items in geography ​

Based on this map, which statement about africa’s economic activity is most accurate? a) coastal countries are all members of opec b) economic development is more common with opec nations c) coastal countries have more access to productive resources d) economic development is more common above the sahara desert

How has the geography of india made it difficult for its people to expand before modern technology?

In which horizon of soil profile is prevent material usually found