What is the capital of Saudi arabic?

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

What body of water is the second cataract of the nile river submerged under

Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )