Nigeria.
Nigeria is the leading oil-producing nation in all of Africa. For the past two decades, Nigeria has been producing over 2 million barrels of oil per day, and most of that oil is exported to other countries. Nigeria is a member of the Organization of the Petroleum Exporting Countries (OPEC), an organization the was founded in 1960 with five member countries and currently has 14 member countries.
Answer: Sorry if this was late. The answers would be B, C, D. I took the test and got 100%.
Yes, Lincoln was against slavery. He issued the Emancipation Proclamation to set the slaves free.
Answer:
George Pullman developed and introduced sleeper cars.
Explanation: