<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>
An increase in skin cancer. UV rays are the dangerous sun rays that used to be deflected by the ozone layer. However, since the ozone has been deteriorating (due to things like pollution and global warming), we are less protected from these dangerous rays, which cause sunburns (and a higher chance of getting skin cancer).
Answer:
Gridlock is also called political stalemate, it is a situation when there is difficulty in passing a laws if it doesn't satisfy the needs of the people.
Grid lock occurs due to the filibuster rule, according to it there must be a super majority of 60 senators to bring a bill to the Senate floor. It happens when the control of both houses of presidency and Congress is split between rival parties.
It prevents the government from enforcing arbitrary laws, US was founded by rebelling against the tyrannical rule of British Crown. The framers wanted a provision to prevent government from becoming tyrannical. Gridlock enforces the concept of limited government and protects the individual rights and liberties from government encroachment by passing arbitrary laws.
Answer:
"It helped make subjects look more realistic.
Explanation:
