Which of the following correctly summarizes the main point of the introductory paragraph?
The Pony Express was the first mail delivery system that reached the West coast.
The Pony Express delivered mail in ten days or less to most places.
The Pony Express crossed the continent from Missouri to the Pacific.
The Pony Express delivered messages on horseback through many areas.
The Pony Express was the first mail delivery system that reached the West coast.
The Pony Express delivered mail in ten days or less to most places.
The Pony Express crossed the continent from Missouri to the Pacific.
The Pony Express delivered messages on horseback through many areas.