Complex sentence: Further seal impressions show several deities worshipped under Peribsen, refuting the monotheism theory, with other contemporary inscriptions showing proof that during Peribsen's reign the Egyptian grammar was perfectionized, seal impressions contain first complete and grammatically correct sentences.
Split into simpler sentences: Further seal impressions show several deities worshipped under Peribsen, refuting the monotheism theory. And further contemporary inscriptions proof that during Peribsen's reign the Egyptian grammar was perfectionized, seal impressions contain first complete and grammatically correct sentences.