While some may argue the worth of that "semi-useless" building, the Caravansary; Ryika's mod "Caravansary Trade Routes"; allows for HUGE, wide Pangea spanning Empires, and provides the means, in extra TRs, for the needed cash flow to maintain the required momentum for world Conquest .
TRs are an assignable asset, as monetary 'bullets', to be held in hand, or to be targeted from city-of-origin to Wherever WE choose to trade with; be it cargo ships or Caravans, to fill Our coffers as best WE can .
Having the ability to do both internal AND external TRs gives US a way to 'forward settle' Courthouses and other Buildings WE need, Barracks, Armories, etc., with CASH, FOOD, and HAMMERS; into newly acquired cities .
WE, of the Traveling Hoard, are proud sponsors of Saint Ryika's Shirne of the Hotfooted Pony Bar & Grill, which is in all of Our cities . Franchise deals ARE negotiable, and welcomed .