A peace treaty was finally brokered in which goods for the Emperor and the Ethiopian Church would be exempted from taxes, imperial agents and Jesuits had free travel, and the Ottomans would only purchase slaves by the Ottomans brought to the port by caravan; the treaty was to be honored by the successors of the rulers as well and contained provisions for breaking the treaty.[20] As a result of the peace and Ottomans' technological superiority, Massawa, with its Ottoman garrison, was not fortified, while Hergigo was defended by a fortress guarded by artillery.[21]