 On February 21, 1543, however, a joint Portuguese-Ethiopian force defeated the Muslim army at the Battle of Wayna Daga, in which Ahmed Gurey was killed.Ahmed Gurey's widow married his nephew Nur ibn Mujahid, in return for his promise to avenge Ahmed's death, who succeeded Ahmed Gurey, and continued hostilities against his northern adversaries until he killed the Ethiopian Emperor in his second invasion of Ethiopia.The European Age of discovery brought Europe's then superpower the Portuguese empire to the coast of East Africa, which at the time enjoyed a flourishing trade with foreign nations.