What invention caused the Pony Express to be discontinued?

More Questions:

What South African antelope lent its name to a brand of athletic shoe?

Who painted Self Portrait with Bandaged Ear?

What was writer and war hero T.E. Lawrence popularly known as?

Whose paintings include "The Red Room', "The Green Stripe', "The Blue Nudes" and "The Yellow Odalisque"?

What city is known as the "Capital of the Silicon Valley"?

The Chocolate Mountains are located in what desert?

What is November's birthstone?

At least 21 fragments of which comet smashed into Jupiter in July of 1994?

What is the name of Dr. Evil's cat in the movie "Austin Powers: International Man of Mystery"?

What actress was a regular on both "Dynasty" and "TJ Hooker" at the same time?

Which of the Seven Wonders of the Ancient World was alive?

Sun Yat-sen is considered the founding father of what country?

What medical facility was founded in Rochester, Minnesota, in the late 1800s?

With what global issue does the 2016 Paris Agreement deal with?

What year was Disney’s "Mickey’s Christmas Carol" released?