Complex sentence: During the subsequent Abbassid era, thousands more Turkmen warriors were brought into Iraq; however, the number of Turkmen who had settled in Iraq were not significant, as a result, the first wave of Turkmen became assimilated into the local Arab population.
Split into simpler sentences: During the subsequent Abbassid era, thousands more Turkmen warriors were brought into Iraq. However, the number of Turkmen who had settled in Iraq were not significant, as a result, the first wave of Turkmen became assimilated into the local Arab population.