It promoted the (relatively) rapid diffusion of immigrants, language, and domesticated crops and animals. Those factors are examined in excellent detail in Jared Diamond's book, "Germ, Guns and Steel" which I highly recommend for anyone studying the development of world cultures. It's a long read, but well worth it.
The authority of the Roman king was called Emperor, it reflects his taking of the title Augustus or Caesar. Another title often used was imperator, originally a military honorific. Early Emperors often used the term princeps (first citizen). I'm pretty sure I gave the correct answer if you asked what was the term was for Roman King.
40 , muhammad was 40 years old when he recieved the first message from jibril
The Alien and Sedition Acts were unconstitutional as it limited free speech, which is guaranteed in the first Amendment. If the individual states chose to nullify the acts, that would be a sign of rebellion. I do not think that the US should institute forms of the Alien and Sedition Act. It's America. The people here should be free to say what they want to say.