Viking Explorations and Settlements: Iceland, Greenland and Vinland. When the Vikings burst out of their homelands starting in the 8th century, they raided, fought and settled in many parts of Europe and Russia, but they also took off on voyages of discovery across the Atlantic Ocean.
A) A time of sever decline in business activity is your best answer
The Great Depression was the result of an economic downturn that led to the mass-fire of workers, which plunged the economy even lower, forcing many businesses to shut down. This was solved through the progress of Franklin D. Roosevelt and his "New Deal"'s, as well as the start of World War II.
~<em>World on Fire</em>
They are important because it is proven that everyone needs someone to talk to. There should be someone to talk to you if you need it.