What are the functions of a megacity?

Megacities serve several critical functions, including economic hubs that drive national and global markets through diverse industries and job opportunities. They often act as cultural centers, fostering innovation, education, and the arts, which attract talent and investment. Additionally, megacities provide essential services and infrastructure, such as transportation, healthcare, and housing, to support their large populations. Finally, they play a significant role in shaping political and social dynamics both locally and internationally.