Complex sentence: But Doom Dooma was an underdeveloped city during the rule of the Ahom Dynasty, in fact it can be said that the place was almost nameless during the period of the Ahoms.
Split into simpler sentences: But Doom Dooma was an underdeveloped city during the rule of the Ahom Dynasty. In fact it can be said that the place was almost nameless during the period of the Ahoms.