Question 3 of 5 Genghis Khan expanded the Mongol Empire by:
A. convincing foreign leaders to adopt the Mongol religion.
B. invading territories with highly skilled warriors on horseback.
C. forming alliances with kingdoms that had more powerful
militaries
D. using his vast wealth to purchase huge amounts of foreign land.

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.

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.

wheres the studying charts

explanation: