Which statement(s) best describe the Persian empire? Select the two correct answers.

(1 point)
• It conquered most of what is now known as Westem Europe.
• It created a postal system that used horsemen as messengers.
• It established a highly skilled professional army built around elite units.
• It forced conquered peoples to adopt Persian customs and religious beliefs.
It was the oldest and smallest of the ancient Mesopotamian empires

The two correct statements are:

- It created a postal system that used horsemen as messengers.
- It established a highly skilled professional army built around elite units.