Which emperor first consolidated the many walls into what became known as the "Long Wall"?

Which describes the persian empire? choose all that are (a) the persian army defeated the athenians at the battle of marathon. (b) the persians avoided using ideas from the peoples they conquered. (c) cyrus allowed conquered peoples to keep their cultures. (d) darius i built a network of good roads for communication. choose all that are

Who was marshall mcluhan and what did he have to do with communication theory?

Explain the importance of president harry truman's order to integrate the u.s. military and the federal government.