Answer:
This was due to the success in banking, trade, commerce and industries.
Explanation:
Throughout the Renaissance we see a movement of people from the country to the city. This is called urbanization, and it resulted in Florence, Genoa, Venice and Milan becoming very powerful cities. This was due to the success in banking, trade, commerce and industries. Geographically, these city-states were surrounded by mountains to the north and water around them. These features offered protection from invaders and opened opportunities for trade.