 Later, Urshu became an economic rival to Yamhad and entered an alliance with Qatna and Shamshi-Adad I to attack Sumu-Epuh of Yamhad (r. c.1810-1780 BC).The death of Shamshi-Adad and the rise of Yarim-Lim I of Yamhad brought an end to this rivalry, as Yamhad was elevated into a Great Kingdom and imposed its direct authority over northern, western and eastern Syria, bringing Urshu under its sphere of influence without annexing it.The Tablets of Mari mention a few kings of Urshu who date to this era, including Shennam and Atru-Sipti, who visited Mari in the 12th year of its king Zimri-Lim.