Stable environment: laws, peace, strong communities and family units, etc
Room to grow: resources: things such as available employees, metals, lumber, incomes, infrastructure, factories, etc
Oxygen: interest rates and taxes. The lower the rates the more oxygen is available. Higher the rates the more the dish is smothered.
You want to increase growth to it's highest potential? You maximize all 4 things. You want to slowly suffocate economic growth? Increase interest rates.
*Yes I'm fully aware this is a simplified version but the basics remain the same as things get more complex. *