D.
Because they -choose- to move
Answer:
This a very interesting and general question.
Explanation:
The US officially entered World War 2 on December 11, 1941. Mobilization began when the United States declared war on Japan on December 8, 1941, one day after the attacks on Pearl Harbor.
This move caused Germany, an ally of Japan at the time, to declare war on the United States on December 11th, sucking the US into the European Theater of this global conflict, and taking the US, in just four short days, from a peacetime nation to one that was preparing for all-out war with two enemies on opposite sides of the globe.
Although formal declarations of war did not come until 1941, one could argue that the US had been involved in WWII for some time already, since 1939, despite the country’s self-proclaimed neutrality. It had played a role by supplying Germany’s opponents — which, by 1940, after the Fall of France to Hitler and Nazi Germany, included pretty much only Great Britain — with supplies for the war effort.
Its important because they want the views of their people,so they don't disagree with there choice and start a riot or go on strike.
In a Mercator map projection, parallels and meridians are straight and perpendicular to each other (as in all cylindrical projections). The east-west stretching on the map is accompanied by a corresponding north-south stretching, making it a conformal map projection. However, because the linear scale of the Mercator map increases with latitude, the size of geographical objects gets more distorted the closer you get to the poles.
All lines of constant bearing (rhumbs or loxodromes) are represented by straight segments. <u><em>The conformality and the straight rhumb lines make the projection particularly useful for navigation</em></u>. Bearings can be measured using wind roses and the corresponding directions can easily be transferred from point to point on the map.
