Who was the first european to reach north america since the viking expeditions

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.