Vocabulary
First, it's important to remember the definitions of key terms within this question and my explanation.
Effects of Urbanization
Megacities have only grown in size because of urbanization. This means that more people with new ideas have entered the city. So, this has created new informational hubs. With a population of that size and new people through urbanization, people are able to work with others from different backgrounds which helps create new solutions.
Additionally, megacities are usually also melting pots of different cultures. As urbanization continues, these cultures diffuse further. this means that syncretism can occur. This means that people are exposed to new cultures that can change their views on the world.
Finally, it's important to remember that not all effects of urbanization are positive. Another effect of urbanization, especially in megacities, is pollution. With that many people living in a city, trash and energy consumption are extremely high. This level of pollution can decrease the air quality making it hard to breathe.