King Darius of Persia made many improvements to his empire, including which of the following (mark all that are true) Building new roads
United the states all under his rule.
Created a universal coin for the empire
Divided the empire into smaller provinces

Apsychologist has developed a series of personality inventories and wants to determine if they are valid. one of the scales measures perfectionism, so he asks a colleague for advice on how to establish the validity of this scale. the colleague tells him that if he were to find a sample of people with personality disorder, these people would obtain high scores on a scale that measures perfectionism.

Cost and benefit in economic example

How will you raise money to equip an army and build a navy. mention specific ideas