Inland gateways- Secondary cities that served as collections and transfer points for resources and products from and to the gateway cities.
Hinterlands- A market or trade area surrounding an urban area, from which goods, services or resources are gathered or distributed.
Somali lands isn't a economic power today. Nor have we ever been but its clear if we shift our focus and re-align ourselves we can be a major regional power by growing our regional towns too.
Gateway cities that will mainly be shipping and transport ion nodes. These cities should be the entrance point for all goods and people entering east and central Africa. These gateway cities should ideally be building on modern High capacity container terminals etc.
Inland cities or regional centres should be regional hubs. Were trade is conducted in the interior.
This map illustrates Gateways cities with Orange circles, Inland cities with red squares, and directions of goods Inland to the ports, from the ports inwards and from the ports out into the developed world.

This debate should be which 5 cities would you choose to take on the Gateway City, Inland Gateway City and Hinterland City. you must chose 5 of each and try to explain why your choice is an economically viable town/city.
Trade looks past borders. For this debate we are talking about trade not politics, so no sl,pl,jl talk. Also you use occupied cities like Jigjiga, 'Djibouti' etc etc.