According to the Qur'an, why did Allah create the world of diversity?

Passages relating to creation occur in the Qur'an is different places, such as: "Verily in the heavens and the earth are signs for those who believe. And in the creation of yourselves, and the fact that animals are scattered (through the earth), are signs for those of assured faith. And in the alternation of night and day, and that fact that Allah sends down sustenance from the sky, and revives therewith the earth after its death, and in the change of the winds, are signs for those who are wise" (45:3-5).

Explanation:

afwan/mashallah

he government should regulate the economy