<span>It reduced coast-to-coast communication from about 180 days to about a week.
This question is mildly ambiguous due to the word "communication". Does it mean "Speed of sending a message?" or "Speed of moving a physical object?" Given the available options as answers, I will assume the meaning is "Speed of moving a physical object?" With that in mind, let's look at the available options and see what makes sense.
It made coast-to-coast communication instantaneous.
* Even modern jets can't travel from coast to coast instantaneously, so you wouldn't expect a train to do so either. So this choice is just plain silly and therefore wrong.
It reduced coast-to-coast communication from about a week to about a day.
* A stagecoach had an average speed of about 5 mph and covered 60 to 70 miles per day. So it's not going to go from coast to coast in only a week. And since that part of the answer is wrong, this choice is wrong.
It reduced coast-to-coast communication from about 180 days to about a week.
* The 180 day estimate is definitely doable. That's an average speed of about 17 miles per day which is a good speed for a person walking day to day. And that would be about 400 miles per day for the train. The numbers make sense and this is the correct answer.
It made coast-to-coast communication more complicated.
* Let's see. Buy a train ticket and possibly arrange for 6 layovers. Or plan a multiple month trip and possibly coordinate that effort without having any rapid means of communications? This option is just plain silly when you consider the logistics of traveling for several months vs traveling for a mere week. So this is a bad choice.</span>
Answer:
Una estructura de gobierno donde un dictador tiene el control total de todo el país, estado o territorio
Answer:
During WW2, the United States faced a severe shortage of pilots, and leaders gambled on an experimental program: Train women to fly military aircraft so male pilots could be released for combat duty overseas.
Explanation:
A Classical civilization classified as classical because it is highly advanced for the age. They all center around some form of water (River Valleys or seas, like the Mediterranean). Classical civilization leave a lasting impact on the world.
Greece is an example of a classical civilization for many reasons. Greece as left the lasting impact of the idea of democracy and voting in the realm of government. Their architecture has been and still is copied today. The idea of theater and drama are classic Greek ideas that others have built on and added to. Much of the basics of philosophy also come from Ancient Greek ideas. Some of the math equations that we are taught and use daily are Greek ideas (Pythagoras). Much of what we know about the Ancient world and other ancient civilizations comes from the writings of the Greeks. They copied manuscripts which have helped us to better understand those civilizations. Greek was key to unlocking the and understanding the Ancient Egyptian writing of hieroglyphics. Even when the Greeks were "conquered" by Rome it was Greek culture that would remain. Rome adopted many of the gods and practices and simply put a Roman flare on everything. <span />
