In 1965, when President Lyndon B. Johnson underwent surgery, his Vice President served as acting President of the United States for exactly three hours. Who was this v.p., and what kind of surgery ?

In what year did the Titanic sink?

What wall divided Berlin from 1961 to 1989?

Which ancient wonder was located in Alexandria, Egypt?

Which empire was ruled by Genghis Khan?

During World War I, the allies, Britain, France, the USA primarily fought against Germany and which two major forces?

What is the second largest city in Japan?