Complex sentence: Ilu-shuma's construction activities included building the old temple of Ishtar, a city wall, subdivision of the city into house plots and diversion of the flow of two springs to the city gates Aushum and Wertum.
Split into simpler sentences: Ilu-shuma's construction activities included building the old temple of Ishtar and a city wall. He subdivided the city into house plots and diverted the flow of two springs to the city gates Aushum and Wertum.