After the death of Alexander the Great, the Greek empire declined because A. communities migrated to new lands.
B. generals fought with each other.
C. nomadic tribes invaded the land.

buying socks and buying shoes are independent events.

disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.