The most urbanized continent of the world is North America. Here's why:

Definition of urbanization
Before we dive into the explanation, let's first define what urbanization means. Urbanization is the process by which an increasing proportion of a population lives in cities and suburbs. It occurs as a result of natural increase (birth rates exceeding death rates), rural-urban migration, and reclassification of rural areas into urban ones.

Factors affecting urbanization
Several factors influence the degree of urbanization in a region. Some of these factors include:

- Economic development: Urbanization tends to increase as a country's economy grows, and people move to urban areas in search of better-paying jobs and economic opportunities.
- Infrastructure: The presence of good infrastructure (e.g., transportation, electricity, water supply) in urban areas makes them more attractive to people, leading to increased urbanization.
- Government policies: Government policies can either promote or hinder urbanization. For example, policies that encourage investment in urban areas may lead to increased urbanization, while policies that restrict rural-urban migration may hinder it.

Why North America is the most urbanized continent
Based on the above factors, North America is the most urbanized continent in the world for the following reasons:

- Economic development: North America has the highest GDP per capita of any continent, with the United States and Canada being the two wealthiest countries in the world. This economic prosperity has led to increased urbanization, as people move to cities and suburbs in search of better economic opportunities.
- Infrastructure: North America has an extensive network of highways, airports, and public transportation systems, making it easy for people to move to and within urban areas. Additionally, North America has a reliable supply of electricity and water, which are essential for urban living.
- Government policies: North American governments have generally promoted urbanization through policies that encourage economic growth in urban areas. For example, the United States has a history of investing in urban renewal projects and providing tax incentives to businesses that locate in urban areas.

Conclusion
In summary, North America is the most urbanized continent in the world due to its high levels of economic development, well-developed infrastructure, and government policies that promote urbanization.