<span>The positions north and south are measured in degrees latitude. Opposite to this, west and east of greenwich is measured in degrees longitude. That's why when determining a position you would say that something is 40 degrees north and 74 degrees west, and this exact position would point to New York City. The first number is how north above the equator it is and the second number how much west from Greenwich it is. </span>
The understanding of gravity was essential in the developmentof Albert Einstein theory of relativity. Which describe relationships between matter and motion.
The correct answer is D. Decreased travel times.
The industrial revolution revolutionized the transport as well, so in this period we have the emergence of transporting machines, like the trains for example, and they were also getting better and better as the year passed by, and they were of great help to the people, especially when they had to travel on long distances.
