Answer: A city is established by how well it can sustain it's economic environment for the ease of business and maintain security while providing basic amenities for those who reside within it.
Step-by-step explanation:
A city is established by how well it can sustain it's economic environment for the ease of business and maintain security while providing basic amenities for those who reside within it.
When this conditions are met appropriately, it'll boast the growth of the city and attract more people and investment for those within the city. There are cases where these conditions are either far from being met or are not met but the cities still do exist but aren't established and they'll keep failing to meet the standard for those resident in it causing the residents to relocate to other cities doing well.