Which country has an economy based mostly on the production and sale of energy

In this unit, you read about transitions of power and the formation of newly independent nations in africa, asia, the americas, and the middle east. some of these transitions were peaceful, while others caused long-term instability. why do you think some countries were more successful than others with political transitions? what do you think were the biggest challenges facing newly independent countries? would it have been possible for leaders to prevent these problems before they happened? why or why not?

Which factor was a major cause of the great depression of the 1930?

Which of the following is a claim about ancient rome that a historian could build san argument around