Briefly Explain What the Term "Agglomeration Economies" Refers to and Briefly

Briefly explain what the term "agglomeration economies" refers to and briefly describe what the fundamental reason for the development of this particular type of economy relates to. Provide two examples of factors associated with agglomeration economies and identify what these factors help to explain. Identify two factors that would lead to diseconomies and briefly explain how the future of many of the world's cities will be likely be determined.