What's the capital of Oman Middle East

How did the movement of soldiers during world war 1 contribute to the global influenza (flu) pandemic of 1918 to 1919, which killed millions of people

The physical processes that create most of earth's physical features, including mountains, are known as

In a constitutional monarchy, the king or queen a. is a symbol of the nation b. runs for office c. controls the legislative branch d. has absolute control