Identify two examples city states or empires in this time period whose prosperity was based on maritime trade rather than on traditional sources of wealth like agriculture or mining or manufacturing.

mombasa ,malindi, kilwa ,sofala ,Zanzibar onthe east african coast

Explanation:

These coastal city states were involved in indian ocean trade

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.