Final answer:
London's internal growth is influenced by both internal factors such as immigration and site and situation advantages, as well as external factors like global economic trends and the city's competitive advantages in commerce and industry.
Step-by-step explanation:
Analyzing the causes of internal growth in London requires an understanding of various geographic, economic, and social factors. Historical and contemporary forces have shaped London's development, from its site and situation factors such as the Thames River providing a navigable waterway, to its place as the administrative and economic center, to modern influences like immigration. While some believe internal factors solely drive London's growth, external factors such as globalization and international trade also play a substantial role. Immigration has notably contributed to internal growth, bringing in labor, skills, and cultural diversity. Additionally, technological innovation and the city's ability to protect and leverage these for competitive advantage have fostered economic expansion and urban development.
However, looking at the broader picture provided by comparisons and theories of development, it's imperative to recognize the complexity inherent in urban growth. A city like London grows not just by internal forces but also by adapting to international economic trends and leveraging its unique competitive advantages in commerce and industry.