i think rome was tradeing on silk rode because Silk Road, also called Silk Route, ancient trade route, linking China with the West, that carried goods and ideas between the two great civilizations of Rome and China.
The tone of the letter of the American President to the emperor of Japan is friendly and something that value peace and equality of both parties. But during the arrival of the american fleet it shows aggressiveness and show of force and advantage of technology in order for the treaty to be accepted. Also even though in the letter it is written an equal and beneficial trade between the two nations but the truth is that foreign powers take advantage of Japanese vulnerability.
You're off by a few there lol :D Earth is actually 4.54 billion years old.
