The Pony Express mail service, established in 1860, could carry mail by horseback 2,000 miles in 10 days. What were the easternmost and westernmost states of this rapid mail service?

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?