below is a three-step synthesis. provide the missing organic products for each step. do not add inorganic side-products or minor products.

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.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.