Which object goes where am I right if not what’s the correct answer

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

Which theory suggested that the earth was once a signle supercontient that gradually that broke up into the contients that we know today

All of the following occurred due to the invention of the railroad except