The texts from Shuruppak, dating to ED IIIa, also seem to confirm the existence of a "ki-engir" league. Member cities of the alliance included Umma, Lagash, Uruk, Nippur, and Adab. Kish may have had a leading position, whereas Shuruppak may have been the administrative center. The members may have assembled in Nippur, but this is uncertain. This alliance seems to have focused on economic and military collaboration, as each city would dispatch soldiers to the league. The primacy of Kish is illustrated by the fact that its ruler Mesilim (c. 2500 BC) acted as arbitrator in a conflict between Lagash and Umma. However, it is not certain whether Kish held this elevated position during the entire period, as the situation seems to have been different during later conflicts between Lagash and Umma. Later, rulers from other cities would use the title 'King of Kish' to strengthen their hegemonic ambitions and possibly also because of the symbolic value of the city.