Mao zedong enacted the two-child policy. select the best answer from the choices provided
a. true
b. false

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.

porter is writing economic history because he is focusing on the cost of developing vaccines.

the exclusive possession or control of the supply or trade in a commodity or service.